linuxmint / linuxmint/cinnamon

3d alt-tab effects are bugged

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Description

coverflow and timeline effects don't work properly for me
they're supposed to smoothly scale out the window you're currently focused into the array of all open windows, and scale the one you select back into view
but instead the moment i press alt + tab, the windows are already at the end of the animation
but i don't think it's an intentional change? because they still change the angles when i tab out and in
video of the problem described above

  • Cinnamon 5.4.12, Mutter 42.2, but this also happened with Cinn 5.4.11
  • Started when I upgraded to Mint 21
  • AMD ATI Radeon Vega Series / Radeon Vega Mobile Series
  • 64 bit

notably, other people have experienced this

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the coverflow and timeline Alt+Tab behavior on Cinnamon 5.4.12 with Mutter 42.2, using the attached video and the reported Mint 21 upgrade context. Compare the animation when switching windows repeatedly; done means the focused window smoothly scales into the window array and the selected window scales back into view.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript
Domain
desktop
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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