I'm using the EU version of the OnePlus 7 Pro on 11.0.1.1 and I don't have such issues. I gave my 2 year old device a refresh at the official service center with a new battery and it's going strong still.
https://old.reddit.com/r/oneplus/comments/ldg7gn/op7pro_open...
https://old.reddit.com/r/oneplus/comments/mvddho/android_11_...
https://forums.oneplus.com/threads/lock-screen-scaling-is-wr...
I tried switching to a Pixel 4a 5G but I was not impressed and switched back to the OnePlus.
That being said, I'm not sure if I'd pay the premium prices of their new flagship models at this point.