Image previewer does not work

OS/Web Information

• Web Browser: Chrome Version 91.0.4472.77 (Official Build) (64-bit) / Version 91.0.864.71 (Official build) (64-bit)
• Local OS: Windows Version 21H1 (19043.1147)
• Remote OS: Red Hat Enterprise Linux Server release 7.9 (Maipo)
• Remote Architecture: amd64 (x86_64)
• code-server --version: 3.11.0 4e8cd09ef0412dfc7b148b7639a692e20e4fd6dd

Steps to Reproduce

1. Open a png file with the built-in image previewer

Expected

Should show the preview of the image

Actual

The editor shows nothing but just blank

Logs

1. The most recent files from ~/.local/share/code-server/coder-logs are empty
2. The browser console: no new messages popped up while opening the image
3. The browser network tab: This is what appeared while opening the image

Screenshot

while inspecting the body of the editor:

Notes

This issue can be reproduced in VS Code: No

This issue can be reproduced with code-server v3.10.2

[jsjoeio]

This should be fixed by https://github.com/cdr/code-server/pull/4131 which will be included in the 3.12 release (planned to come out this week).

[bowdens07]

I’ve checked out 3.11.1 and unfortunately can still reproduce the error through the SVG extension, at about a 2% rate. I would also like to point out that this version cannot open png, gif or jpg files. You’ll get this error:

I’m going to open up a new issue for it, because it’s an unrelated error to this thread. Additionally, I started messing around with older versions. I found out I can’t reproduce the webview error nor the failure to load png, gif, jpg, etc. on version 3.9.0. It’s possible this isn’t the boundary for the regression, but at the very least I know that version can run without a hitch.

UPDATE: From version 3.9.3 to version 3.10.0 is where the webview failure was added. 3.9.3 works every time, we see png, jpg, gif, extension errors, etc. fail to load the webview in the same manner described in the initial bug report. I suggest investigating the changes between the versions to identify a potential regression