I got this exact error + crash by opening a font menu in Inkscape while
fractional scaling is on in a 2 monitor + laptop screen setup.

---
May 12 16:54:41 panta-rog gnome-shell[30154]: #0   64e318828cf8 i   
resource:///org/gnome/shell/ui/init.js:21 (6be61e70c90 @ 48)
May 12 16:54:41 panta-rog gnome-shell[30154]: == Stack trace for context 
0x64e318732ad0 ==
May 12 16:54:41 panta-rog gnome-shell[30154]: GNOME Shell crashed with signal 5
May 12 16:54:41 panta-rog gnome-shell[30154]: Received an X Window System error.
                                              This probably reflects a bug in 
the program.
                                              The error was 'GLXBadPixmap'.
                                                (Details: serial 22276 
error_code 161 request_code 152 (GLX) minor_code 23)
                                                (Note to programmers: normally, 
X errors are reported asynchronously;
                                                 that is, you will receive the 
error a while after causing it.
                                                 To debug your program, run it 
with the MUTTER_SYNC environment
                                                 variable to change this 
behavior. You can then get a meaningful
                                                 backtrace from your debugger 
if you break on the mtk_x_error() function.)
May 12 16:54:41 panta-rog gnome-shell[30154]: Skipping layers 1..n of your 
pipeline since the first layer is sliced. We don't currently support any 
multi-texturing with sliced textures but assume layer 0 is the most important 
to keep
May 12 16:54:41 panta-rog gnome-shell[30154]: meta_window_stick: assertion 
'!window->override_redirect' failed
May 12 16:54:40 panta-rog gnome-shell[30154]: meta_window_stick: assertion 
'!window->override_redirect' failed
May 12 16:54:32 panta-rog gnome-shell[30154]: meta_window_stick: assertion 
'!window->override_redirect' failed
---

Might help repro the issuse.

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https://bugs.launchpad.net/bugs/2103609

Title:
  gnome-shell crashed with SIGTRAP due to GLXBadPixmap when desktop-
  icons-ng is enabled

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