Thanks for the report.You mean this is an issue or bug in the kernel?
I don't have this issue. Tested this couple of times in a call. I am not seeing in delay for screen wakeup nor screen off during calls.
Wondering why its all good for me when you mentioned you found the issue.
Problem is @tbalden and me both don't own a pixel 7 regular.
Seems to be only affecting regular pixel 7. No issues on pixel 7 pro. So if you're on P7 pro, you'd be not affected.
If you're on P7 regular and you don't use any cleanslate features that depend on screen state, you might be unaffected too.
If you're on regular P7 and you use those cleanslate features and don't face any issues, the issue might also be related to another mod.
We can't say for certain, but @tbalden might have already found a fix as it's caused by a lock, that could be blocking the touch driver.
I'll merge this fix in the next update, but since I don't have P7 regular, testing needs to be done by someone else and that makes the process slower.
edit: ninjaed by @tbalden