[Bug 402892] Re: Mouse cursor gets stuck in "drag and drop" mode

[Ernest de Santes]

Steps to reproduce:

This is a video of how to reproduce it: https://emalm.com/?v=DsBSK

1. Go to google.com
2. Click the Google logo, move the logo as little as possible but enough to cause dragging and then release as soon as possible after you see that your mouse started dragging. Eventually you could just do it extremely quickly like in the video: https://emalm.com/?v=DsBSK
3. Sometimes the cursor would get stuck in the drag mode with the Google logo attached to it (even though the mouse button is no longer pressed).

It usually requires a lot of attempts to reproduce.

It's reproducible on 20.04 and 21.10 Wayland. It's reproducible in
Chrome, Firefox title bar, some other programs.

It makes the mouse unusable.

I'm absolutely certain that it's not an issue with the mouse (I've
researched and tested everything thoroughly). I've verified the release
event is received via xinput --test-xi2 --root, verified that this
doesn't affect non-draggable things (like mousedown / mouseup Javascript
events), verified with another input device (graphics tablet), where it
also happens.

I've tested different kernels: 5.4, 5.11, 5.13 and this bug exists on
all of them.

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https://bugs.launchpad.net/bugs/402892

Title:
  Mouse cursor gets stuck in "drag and drop" mode

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