Even double-clicking in Finder is broken, many times double-clicks are just ignored.
I suspect they made the animation so heavy that it reaches its deadline before it even starts, so it gets skipped.
Not sure if it's better or worse than Tahoe, where the animation (mostly) worked but app icons either popped in all at once a bit later or were rendered one by one from top-left to bottom-right.
It's such a buggy mess. When using my Mac these days I miss the polish of my Linux desktop.
Just highlighting this sentence.
Rather than rebooting, I just kill "pboard" in Activity Monitor, and afterwards restart a few GUI programs that were directly affected (including Finder and Dock.)
My wild theory is that Firefox is the culprit. At least the issues happened more frequently once I had to switch to Firefox for proper content blocking extensions. Anyway… I have no idea how to prove that, so it's just a guess, not a blame.
Many people have complained about how hard it is to find a safe place to grab windows in Tahoe when you want to move them, though, and I absolutely agree with that complaint.
Thankfully you can fix them by running `killall Dock`, until they break again an hour later.