Shader compilation broken

[LecrisUT]

Seems like a similar issue to:
flathub/im.riot.Riot#411

Temporary workaround:

$ rm -rf ~/.var/app/org.zulip.Zulip/config/Zulip/GPUCache

[superuser-does]

Another related issue: laurent22/joplin#9080
It appears to be related to Mesa / libdrm. I can confirm the workaround above worked for me.

[devurandom]

Thanks for the workaround! Quitting Zulip, deleting the GPU cache, and starting Zulip again brought the app back.

For reference and search: The symptoms I saw was a mostly white window, that when hard reloading using ctrl+R sometimes would show some grey areas, sometimes the icons of the organizations, and sometimes a faint hint of a search bar. The mouse cursor would change when moving it over the window, but it would never display the app in a usable way.

[uaqben]

FWIW: running Fedora 38. I followed the above, however Zulip didn't recreate GPUCache/ on its own, and the black screen glitch persisted.

After reinstating a clean GPUCache/, and starting up Zulip, all colors back to life ;)

In other words, for me $ rm -rf ~/.var/app/org.zulip.Zulip/config/Zulip/GPUCache/* fixed it.