Windows Terminal crashes (Vanishes with no errors) when large font sizes are used

[feoh]

Windows Terminal version

1.21.2911.0

Windows build number

10.0.22631.0

Other Software

The bug sometimes manifests when I'm running Neovim although it's also quite common from just the terminal itself, either in WSL2 running stock Ubuntu or in Powershell on the native Windows host side.

Steps to reproduce

Open Terminal. Hit Ctrl+ 5 times to boost font size to my ludicrously large default :)

Open a text based editor, stream some text to the terminal. I can't really pin down the behavior that triggers it very well or I'd take a screen recording.

This issue has happened in the past but was fixed and vanished for a while. I had previously been tracking it in #8730

Expected Behavior

I expect Terminal not to just vanish taking my editing session, command session or whatever else I'm working on with it. This is the worst kind of failure in a terminal program IMO.

Even if it just hard crashed I could maybe at least just copy what my current state was, vanishing without a trace is tough.

Actual Behavior

Terminal vanishes with no error in mid stream, sometimes while typing, sometimes while displaying streamed text.

[carlos-zamora]

Thanks for filing! Could you please capture a dump file using this guide /? https://github.com/microsoft/terminal/wiki/Troubleshooting-Tips#capture-automatically

[feoh]

Happy to. It's frustratingly irregular, it won't happen for a while, and then the window will vanish very shortly after opening a new tab.

Thanks for taking a look!

[DHowett]

If you have any historical entries in your Event Viewer for this crash, that may help too! :)

[feoh]

@DHowett Any clues for the clueless around what I'd be searching for? Pardon I'm a bit Event Viewer clueless.

Thanks so much again for taking a look.