My MacOS has this insane bug where the cursor sometimes won't change to a pointer/loading/any other state on my second monitor. This is really bad, but even worse for me who writes websites for a living, and need to check that my CSS cursor pointer class actually worked. I can't count how many minutes I've lost refreshing my browser and double-checking my code. Now I just keep my browser on my primary monitor. I've found many other people with this bug on the internet, and it has been happening for YEARS. I honestly can't understand how a premium product aimed at developers can have something like this for YEARS without a fix. I'm moving away from MacOS, and might ditch my iPhone too as I won't have all the nice integration with MacOS anymore.
Do you have a trackpad? If you re-enter focus by right clicking (very easy to do with gestures), focus stops working until you leave and re enter by left clicking. Unfortunately not a new issue.
Fuck you, Apple.