White page when coming back from screensaver, linux

[lrhn]

When I leave the new DartPad as the active tab in Chrome, and my Linux laptop locks the screen (possibly suspends, don't really know since it resumes on any keypress), then the DartPad tab is a blank white rectangle when I come back and log in.

It doesn't change if I resize the browser, doesn't change if I open DevTools, doesn't change until I reload (which loses the content, #2817).

The UI seems to still be there, I can select and copy the text (yey, workaround), and click buttons if I know where they are,
but nothing renders.

This hasn't happened for any other tab, did not happen for the old DartPad, doesn't happen for other DartPad tabs that are not currently displayed, but it happens completely consistently when the current tab is a new DartPad.

The dev-tools console states:

 WebGL: this extension has very low support on mobile devices; do not rely on it for rendering effects: WEBGL_polygon_mode
(anonymous) @ www.gstatic.com/flut…um/canvaskit.js:129

master.api.dartpad.dev/api/v3/compileDDC:1 
       Failed to load resource: the server responded with a status of 400 ()

Since I'm not on a mobile decide, the WEBGL warningdoes not appear important, but since it's a rendering issue, it might be.
I can see the body has an attribute flt-renderer="canvaskit (auto-selected)".

If I send a load event to the window, the rendering starts working, but also loses the editor content.

(Does sound like an issue that's not directly related to DartPad, but it only occurs for DartPad, so maybe something can be done to avoid it. Or maybe it will happen for other Flutter pages, I just haven't used any on that laptop.)

System Details Report

Report details

• Date generated: 2024-02-21 11:59:55

Hardware Information:

• Hardware Model: Lenovo ThinkPad P1 Gen 4i
• Processor: 11th Gen Intel® Core™ i7-11850H × 16
• Graphics: Intel® UHD Graphics (TGL GT1)

Software Information:

• OS Name: Debian GNU/Linux rodete
• OS Type: 64-bit
• GNOME Version: 44.5
• Windowing System: X11
• Kernel Version: Linux 6.5.13-1rodete2-amd64

Chrome:

Version 121.0.6167.184 (Official Build) (64-bit)