VSCode Debug Console fails to display triple-backtick fenced blocks containing “see”

[gh-pap]

Type: Bug

Step 1 of 1: Execute this print. This was in a Flutter app but suspect the issue is language-independent.
print(
'\nVSC is a great tool and, normally, the VSC Debug Console will display any text you (for example) print(), even if that text is encased in a set of triple backticks.\n'
'\n\n'
'\nBut if a piece of text containing the letters "see" is encased within triple backticks the VSC Debug Console will NOT display the text.\n'
'\n\n'
'\nsee\n',
);

Expected output:

VSC is a great tool and, normally, the VSC Debug Console will display any text you (for example) print(), even if that text is encased in a set of triple backticks.

But if a piece of text containing the letters "see" is encased within triple backticks the VSC Debug Console will NOT display the text.

see

Actual output:

VSC is a great tool and, normally, the VSC Debug Console will display any text you (for example) print(), even if that text is encased in a set of triple backticks.

Other: this might sound like a trivial issue, but i had text with the letters s-e-e encased in triple backticks in Firestore and litterally spent an entire day sorting out why my code wasn't working (code was working, displaying debug output was not working).

VS Code version: Code 1.101.2 (2901c5a, 2025-06-24T20:27:15.391Z)
OS version: Windows_NT x64 10.0.26100
Modes:

System Info

Item	Value
CPUs	Intel(R) Core(TM) Ultra 9 288V (8 x 3302)
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 skia_graphite: disabled_off video_decode: enabled video_encode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off
Load (avg)	undefined
Memory (System)	31.57GB (15.31GB free)
Process Argv	--crash-reporter-id 4f38453c-7149-4340-aa8a-caa1f8dc53a0
Screen Reader	no
VM	0%

Extensions (15)

Extension	Author (truncated)	Version
firecode	ChF	1.3.0
dart-code	Dar	3.114.2
flutter	Dar	3.114.0
vscode-eslint	dba	3.0.10
docker	doc	0.11.0
prettier-vscode	esb	11.0.0
copilot	Git	1.338.0
copilot-chat	Git	0.28.5
prettify-json	moh	0.0.3
vscode-containers	ms-	2.0.3
vscode-docker	ms-	2.0.0
debugpy	ms-	2025.8.0
python	ms-	2025.8.0
vscode-pylance	ms-	2025.6.2
cmake-tools	ms-	1.20.53

A/B Experiments

vsliv368:30146709
vspor879:30202332
vspor708:30202333
vspor363:30204092
pythonvspyt551cf:31249601
binariesv615:30325510
c4g48928:30535728
azure-dev_surveyone:30548225
962ge761:30959799
h48ei257:31000450
cppperfnew:31000557
dwnewjupyter:31046869
nativeloc1:31192215
5fd0e150:31155592
dwcopilot:31170013
6074i472:31201624
dwoutputs:31242946
customenabled:31248079
9064b325:31222308
copilot_t_ci:31333650
e5gg6876:31282496
pythoneinst12:31285622
4gafe986:31271826
c7cif404:31314491
pythonpulldiag:31335739
996jf627:31283433
pythonrdcb7:31342333
usemplatestapi:31297334
0aa6g176:31307128
7bj51361:31289155
747dc170:31275177
aj953862:31281341
generatesymbolt:31295002
convertfstringf:31295003
9d2cg352:31339597
convertlamdaf:31329270
0g0a1943:31341127
i851h500:31338111
usemarketplace:31336439
nesew2to5:31336538
agentclaude:31335815
nes-diff-11:31337487
testaa123cf:31335227
6abeh943:31336334
yijiwantestdri0626-c:31336931
ji9b5146:31342393

[pappy-AL]

IMPORTANT: you must view this in raw edit mode because the bug involves markdown chars and the github viewer renders the print statements. Though it may not look like it, each message below is enclosed actually within triple backticks (otherwise you won't be able to repro the issue).

Maybe my repro step was trying to be too clever. Just run this:
print('you will not see this message');
print('but you will this message');

[RedCMD]

you can put code inside a Markdown codeblock

# code

````md
# code
````

[gh-pap]

Good point, hadn't thought of that. I shall try a third time. To repeat: the issue, as bizarre as it sounds, is that text will not print in the VSC debug console if the text includes the word "see" within triple-backticks. It's extremely easy to repro. Just run this:

print('```you will not see this message```');
print('```but you will this message```');

[RedCMD]

works fine with console.log() in a javascript extension

print() isn't from VSCode

[gh-pap]

Thanks for trying it. So I made what I thought would be a minimal repro dart file

void main() {
  print('```can you see this message?```');
  print('```can you view this message?```');
}

But it gave the correct output:

```can you see this message?```
```can you view this message?```

So there's clearly something upstream in my code putting VSC Debug Console into an odd state. I'll see if I can come up with minimal repro dart that illustrates the issue (I thought I had, but obviously not).

[gh-pap]

Closing as "user error" (I had "see" in my Debug Console filter, but for whatever reason the Debug Console still printed the double backticks in the text).