[Bug 1838965]

[W-jan-k]

(In reply to mail from comment #5)
If you open about:support, what does "Compositing" say?
It is normal that the Basic compositor (software rendering) shows tearing. Please open about:config, set gfx.webrender.all to true and restart Firefox to enable OpenGL rendering. WebRender is in the process of becoming enabled by default on Linux.

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https://bugs.launchpad.net/bugs/1838965

Title:
  Screen tearing in Firefox on Wayland

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