I'm honestly very puzzled by all the positive comments I've seen about Golden Gate, it's strictly worse in my experience (i.e., I can't think of any old bugs that don't bother me anymore, but there are annoying new ones). For example, I can report the same menubar bug as the author: as I'm typing this very comment, my Firefox menubar has two menus permanently "selected" [0]. I use the Hiding option for the Dock, but ever since I upgraded the Dock randomly switches into an unhidden state (but it still thinks it's hidden, so I have to disable Hiding and then re-enable it to fix the behavior). I now have to semi-regularly `sudo killall coreaudiod` to fix the audio randomly cutting out on my AirPods (this would occasionally happen before, but it's gotten way more frequent). I'm left very unimpressed with whatever's going on at Apple.

I just checked and 27.0.1 is out, so here's hoping it fixes anything....

[0] https://imgur.com/a/5i5TlzQ

EDIT: Actually, one bug that I haven't noticed on Tahoe is the weird lack of vertical padding that some System Settings screens used to have. Credit where credit's due.