Diff Inline View is not showing removed code

[deadlydog]

Type: Bug

1. Open a file that is stored in source control.
2. Remove some text from it.
3. In the "Source Control" menu, select the file to open the diff and see the changes.
4. Toggle between Split View and Inline View. Split View shows the deleted text, while Inline View does not. The minimap scrollbar shows red though, indicating it sees the removed code.

VS Code version: Code 1.82.1 (6509174, 2023-09-08T08:45:05.575Z)
OS version: Windows_NT x64 10.0.19045
Modes:

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-10875H CPU @ 2.30GHz (16 x 2304)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: enabled_on direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok video_decode: enabled video_encode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: enabled
Load (avg)	undefined
Memory (System)	31.72GB (15.89GB free)
Process Argv	--crash-reporter-id e8c746cd-ffb1-4751-aa20-daae247bf885
Screen Reader	no
VM	0%

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shopify-liquid	sis	3.2.2
runme	sta	1.10.0
code-spell-checker	str	3.0.1
azure-devops-yaml-pipeline-validator	Tom	1.8.0
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codetour	vsl	0.0.59
gistfs	vsl	0.4.1
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Screenshots

Here is the Split View diff, where you can see that code was removed:

And here is the Inline View, which would normally show the removed text, but no longer does:

[deadlydog]

This looks to have been fixed in the recent VS Code update, so I'm going to close this issue.

[jmalangoni]

FYI this has appeared for me now in latest release.

The bug does not appear immediately on vscode application launch. Have not noticed any specific action triggering it, but will keep an eye out.

Version: 1.83.1 (user setup)
Commit: f1b07bd
Date: 2023-10-10T23:48:05.904Z
Electron: 25.8.4
ElectronBuildId: 24154031
Chromium: 114.0.5735.289
Node.js: 18.15.0
V8: 11.4.183.29-electron.0
OS: Windows_NT x64 10.0.19044

[hediet]

It looks like something with the view zones is off. The alignment viewzones are missing in the first screenshot.

Do you have repro steps?

[ahkhanjani]

Somewhere in the middle of coding VS Code suddenly decides to do this. Closing and reopening VS Code fixes it temporarily until this happens again. That's my current unsophisticated observation. (v1.83.1)

[fbstj]

https://stackoverflow.com/questions/77324073/vscode-is-hiding-removed-lines-from-diffs

I've been having this issue too. if you move the diff view or split the view the "new" view shows things correctly.

[hediet]

Do you have any settings enabled that could cause this? This is certainly a bug, but so far I didn't manage to reproduce

[fbstj]

I have looked around the "diff" & "git" configuration options and could not see anything that popped out as a cause. I don't think I have any changed / non-default configuration tbh, but it's hard to tell.

especially since the removed lines DO show up if I move the diff tab into any of the views not the "main"/origin one; and they show up if I then close the origin tabs and let the tab fill the page. but then if I open another tab.

[its-dibo]

I have this issue in the latest vscode version

[dwoodwardgb]

Happens for me invariably. Here is my version info and settings.json

Version: 1.83.1 (Universal)
Commit: f1b07bd
Date: 2023-10-10T23:46:55.789Z (1 wk ago)
Electron: 25.8.4
ElectronBuildId: 24154031
Chromium: 114.0.5735.289
Node.js: 18.15.0
V8: 11.4.183.29-electron.0
OS: Darwin arm64 22.6.0

{
  "window.autoDetectColorScheme": true,
  "workbench.sideBar.location": "right",
  "[typescriptreact]": {
    "editor.defaultFormatter": "esbenp.prettier-vscode"
  },
  "[javascript]": {
    "editor.defaultFormatter": "esbenp.prettier-vscode"
  },
  "editor.tabSize": 2,
  "[html]": {
    "editor.defaultFormatter": "vscode.html-language-features"
  },
  "editor.lineNumbers": "relative",
  "editor.fontFamily": "SF Mono,Menlo,monospace",
  "editor.fontLigatures": true,
  "workbench.preferredLightColorTheme": "Default Light+ Experimental",
  "workbench.preferredDarkColorTheme": "Default Dark+ Experimental",
  "git.confirmSync": false,
  "[python]": {
    "editor.formatOnType": true
  },
  "thunder-client.previewFeatures": true,
  "thunder-client.responseLimit": 5,
  "ruby.rubocop.onSave": false,
  "[json]": {
    "editor.defaultFormatter": "esbenp.prettier-vscode"
  },
  "[typescript]": {
    "editor.defaultFormatter": "esbenp.prettier-vscode"
  },
  "terminal.integrated.fontSize": 17,
  "ruby.useBundler": true, //run non-lint commands with bundle exec
  "ruby.useLanguageServer": true, // use the internal language server (see below)
  "ruby.lint": {
    "rubocop": {
      "useBundler": true // enable rubocop via bundler
    }
  },
  "ruby.format": "rubocop",
  "workbench.colorTheme": "Alabaster",
  "editor.formatOnSaveMode": "modificationsIfAvailable",
  "editor.formatOnSave": true,
  "editor.fontSize": 17
}

[vikvikvr]

toggling the Diff Editor: Render Side By Side setting on and off worked for me

[ahkhanjani]

toggling the Diff Editor: Render Side By Side setting on and off worked for me

Doesn't work for me.

[noalbalint]

Another quick fix/workaround is to run > Developer: Reload Window from the Command Pallete. @ahkhanjani try that maybe?

[hediet]

Can you check/share the dev tool logs when this happens?
Can you also share both sides of the diff where this happens?

I'm using the diff editor daily and so far I didn't see this yet.

[maxjf1]

Same just happened for me. In my case it asked if i want to increase the diff time processing (was processing 2 big files), apart from that i haven't done anything unusual.

Reloading the window solved for me

[bvfusion1001]

This issue has been a huge problem for me for over a month - especially because I frequent the use of Stage selected changes which was resulting is some very strange behavior. Developer: Reload Window solved all my problems. Thanks!

UPDATE: This doesn't solve my issue, this solved an issue, but I think I'm experiencing another unrelated one.

[ADTC]

I faced this issue and updated to 1.84.2 (user setup). After restart, the issue is not present, but that could be temporary until the issue returns again (as per previous comments here). I'm not able to forcefully reproduce the issue by doing things like switching diff views, staging, unstaging, staging selected ranges etc.

It's interesting to note that the first occurrence of this issue happened when I staged a file. Usually the diff in the working tree disappears fully, but this time only the added diff (green) disappeared, where as the deleted diff (red) still remained. I thought that was odd, and checked the diff in the index, and it only contained the added diff (green).

I checked git diff on Terminal and everything is alright there, so I'm thinking this might be a corruption of the VS Code's internal diff cache or something, which could explain why Reload Window or restart of VS Code fixes this temporarily.

PS: When I first noticed it, I incorrectly thought this is some kind of a new feature which hides unnecessary deleted lines 😂 (for example if the line has no deleted chars, only added ones) and went around digging in Settings to turn it off. Apparently, it's a bug and regression.

[ADTC]

@hediet is there a way for one of us to get a dump of the VS Code app diff engine/module/whatever when this happens again? Maybe you can inspect it to see what's going on. 🙂

Logs could be an alternative too. Maybe the diff engine is hitting some errors and silently bypassing them.

[JoshHarmon]

Just ran into this after doing a lot of work in a single session (i.e. the problem did not immediately start occurring). Developer: Reload Window was an effective workaround for me as well. Before this occurred, I had been doing an abundant amount of mass find/replace (non-regex, non-case-sensitive, non-whole-word, non-preserve-case), that had cumulatively dirtied >800 files in my working directory. In the course of doing this, I had invoked the diff editor many dozens (if not hundreds) of times from within the session before this misbehavior occurred.

This misbehavior was not isolated to a specific file or find result; once it began occurring, the misbehavior continued with each file/location in my find results list.

Version: 1.84.2 (user setup)
Commit: 1a5daa3
Date: 2023-11-09T10:51:52.184Z
Electron: 25.9.2
ElectronBuildId: 24603566
Chromium: 114.0.5735.289
Node.js: 18.15.0
V8: 11.4.183.29-electron.0
OS: Windows_NT x64 10.0.22621

[ADTC]

@hediet this is most consistently happening to me when I'm viewing worktree diff, then staging it in the sidebar. It happens randomly, but I noticed this is what I was usually doing just before it does.

I have to Reload Window each time it happens to fix the issue, until it re-occurs sometime later.

[JoshHarmon]

@hediet Time-correlated renderer.log entries when something that looked like this issue re-occurred (except showing only the removal, not the addition) just a bit ago... hope this provides a hint at what might be going on.

2023-11-22 13:38:00.272 [error] Cannot read properties of undefined (reading 'endLineNumberExclusive'): TypeError: Cannot read properties of undefined (reading 'endLineNumberExclusive')
    at E.intersectsStrict (vscode-file://vscode-app/c:/Users/me/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:96:10545)
    at D (vscode-file://vscode-app/c:/Users/me/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:681:45393)
    at vscode-file://vscode-app/c:/Users/me/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:681:47301
    at w (vscode-file://vscode-app/c:/Users/me/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:85:8256)
    at vscode-file://vscode-app/c:/Users/me/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:681:47296
2023-11-22 13:38:45.797 [error] Cannot read properties of undefined (reading 'endLineNumberExclusive'): TypeError: Cannot read properties of undefined (reading 'endLineNumberExclusive')
    at E.intersectsStrict (vscode-file://vscode-app/c:/Users/me/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:96:10545)
    at D (vscode-file://vscode-app/c:/Users/me/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:681:45393)
    at vscode-file://vscode-app/c:/Users/me/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:681:47301
    at w (vscode-file://vscode-app/c:/Users/me/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:85:8256)
    at vscode-file://vscode-app/c:/Users/me/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:681:47296
2023-11-22 13:38:56.498 [error] Cannot read properties of undefined (reading 'endLineNumberExclusive'): TypeError: Cannot read properties of undefined (reading 'endLineNumberExclusive')
    at E.intersectsStrict (vscode-file://vscode-app/c:/Users/me/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:96:10545)
    at D (vscode-file://vscode-app/c:/Users/me/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:681:45393)
    at vscode-file://vscode-app/c:/Users/me/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:681:47301
    at w (vscode-file://vscode-app/c:/Users/me/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:85:8256)
    at vscode-file://vscode-app/c:/Users/me/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:681:47296
2023-11-22 13:40:04.384 [error] Cannot read properties of undefined (reading 'endLineNumberExclusive'): TypeError: Cannot read properties of undefined (reading 'endLineNumberExclusive')
    at E.intersectsStrict (vscode-file://vscode-app/c:/Users/me/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:96:10545)
    at D (vscode-file://vscode-app/c:/Users/me/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:681:45393)
    at vscode-file://vscode-app/c:/Users/me/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:681:47301
    at w (vscode-file://vscode-app/c:/Users/me/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:85:8256)
    at vscode-file://vscode-app/c:/Users/me/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:681:47296

Edit to add: One other thing I observe is the only-shows-deleted behavior seems to happen on the second or later Replace (Ctrl+Shift+1) operation in the same file. Clicking a find result in a different file and then clicking back to the offending file seems to "reinitialize" things into a working state that shows the addition and removal as expected.

Edit to add again: This seems to be happening in the Replace Preview editor today. I'm not sure how to judge whether what I'm seeing today is related to the original issue or not since it's similar squirrely behavior in diffing. Sorry if this is in fact a distinct issue.

[hediet]

This actually might be a duplicate of #198516 which I already fixed last week in insiders.
Thanks so much @JoshHarmon for the log! That was super helpful to track this down.

[hediet]

Closing as duplicate of #198516.

[dzid26]

Are you sure this is fixed? If you look in the first post of the issue, the split screen screenshot is not correct either -it's missing deleted lines decorations. I just had the same behaviour as that screenshot.

Missing deleted line decorations in split view:

And inline view doesn't show anything:

This happened after "Staging Selected Ranges".
Reloading the window fixes it temporarily:

[dzid26]

Nevermind, I think your fix didn't go to release yet

Version: 1.84.2 (user setup)
Commit: 1a5daa3
Date: 2023-11-09T10:51:52.184Z
Electron: 25.9.2
ElectronBuildId: 24603566
Chromium: 114.0.5735.289
Node.js: 18.15.0
V8: 11.4.183.29-electron.0
OS: Windows_NT x64 10.0.22631

[jbnv]

This issue is most certainly not resolved. I've had this problem for several months but it was always "fixed" by closing and restarting Code. As of today it's happening about every five files or so. Developer: Reload Window is an effective workaround only when the problem happens infrequently; but when I'm trying to review hundreds of files to push a bug fix into production, it's not an effective workaround. The issue that this issue "duplicates" doesn't mean anything to me.

It's definitely a cross-browser issue. I'm using Ubuntu and at least two of the people reporting the bug in this thread are using Windows.

Can someone give me a status on this that I can explain easily to my boss? Thanks.

Version: 1.85.1
Commit: 0ee08df
Date: 2023-12-13T09:47:11.635Z
Electron: 25.9.7
ElectronBuildId: 25551756
Chromium: 114.0.5735.289
Node.js: 18.15.0
V8: 11.4.183.29-electron.0
OS: Linux x64 5.4.0-169-generic snap

[hediet]

@jbnv Please see the issue here.

The fix just landed last week, so it will be available in next months release (17e0dec).
Feel free to use VS Code insiders, which already contains the fix,

Also, please share the logs of the dev tools the next time this happens. This helps to verify that the bugfix indeed fixes your issue.