For notifications, here[1] is a pretty good overview of the problem.
A collection of comments on reformatted alert messages: [2].
Comment on icons, translucency and other quirks: [3].
[1] https://tyler.io/240-invisible-pixels/
[2] https://mjtsai.com/blog/2020/07/03/big-surs-narrow-alerts/
[3] https://medium.com/macoclock/why-apple-has-broken-some-basic...
Not to mention posts on Reddit, Twitter, blogs, etc. about lots of these UI quirks.