Pixel 7 Pro Lock Screen Behavior Changed

I recently did my first screen (and battery) replacement. It was for my Pixel 7 Pro. Everything is working fine except some issues with my lock screen. I'd appreciate some help tracking down the issue.

What's happening: When I lock my phone (using the side button) the display goes dim and shows the time (lock screen). But then after about 30sec the screen goes black. Touching the screen or moving the phone doesn't change anything, instead I have to click the side button to activate the screen, and then I can unlock (using fingerprint, face, etc).

This behavior is not what it was before I replaced my screen. I have Lock Screen set to "Always show time and info" = on, "Tap to check phone" = on, and "Lift to check phone" = on. With these settings, I'd expect that lifting or tapping my phone should wake it up. I'd also expect to never have a blank screen.

I downloaded a sensor-checking program and all of my sensors work except the proximity sensor -- it reads 0.0cm at all times. I can't find any info about how this is related to my issues, but it seems it is possibly the culprit since it lives behind the screen. Unfortunately, I did not run these sensor tests before the screen replacement.

Any ideas or suggestions?