I can't repro on macOS with bash or zsh. What state was the terminal in before you moved it?

I am not sure, normal? This is after fresh start running out of master

Hm, cannot reproduce with a fresh user data dir. How can I debug this?

What I suspect is happening is that zsh is doing this as a reaction to the line size being reduced. This could be confirmed by enabling escape sequence logging https://github.com/microsoft/vscode/wiki/Terminal-Issues#enabling-escape-sequence-logging, that should log out how zsh reacts after the terminal resize happens.

You could also check what happens when reducing the window width while the panel is on the bottom.

@Tyriar yeah that seems to trigger it as well, just having smaller width for panel:

Output:

[Extension Host] debugger inspector at chrome-devtools://devtools/bundled/inspector.html?experiments=true&v8only=true&ws=127.0.0.1:5870/901cda19-6248-4d63-a05a-b8cca71fde55
2/Users/bpasero/Development/Microsoft/monaco/node_modules/xterm/lib/xterm.js:1 xterm.js: parsing data 

�[0m�[27m�[24m�[J~/Documents/ticino-playground> 

Hmm I guess not then, that does the following:

[0m: clear char styles
[27m: do not invert colors
[24m: do not underline
[J: erase current line and below
Reprint prompt

If you inspect the element does the terminal container fill the view? Does cmd+a select everthing?

Cmd+A

Inspect:

And I cannot fix it even when resizing:

😕

Ok so that tells us that xterm.js isn't resizing correctly. I just tried to repro again with all renderers but couldn't still. Does it change depending on the renderer you're using?

I did just made changes in this area in 5b0460a.

Could you try change these lines:

To:

charHeight: xtermCore._charSizeService!.height!,
charWidth: xtermCore._charSizeService!.width!

And see if that fixes the problem?

@Tyriar yes, that fixes it. Btw I am running with zoom level 1 always.

@bpasero thanks, I think that's the piece I was missing 😃

I can kind of reproduce, it's only down a little bit but that might be because of the font family or monitor size.

@bpasero hmm, maybe not... Could you debug and take a screenshot of the values of: xtermCore._charSizeService and xtermCore._renderService.dimensions?

Can you try with "terminal.integrated.lineHeight": 1.4,