Bug Strange Real-Time Light Behavior on Quest

Hello everyone.
I'm in the process of creating a game for the Quest headset. Naturally, I'm creating an APK for the Android build platform. Everything's working fine, except the real-time lights in my scene act very strangely. Specifically, they will turn on and off depending on the angle that I look at them. Initially, I figured this was due to quality settings, as real-time lights can be expensive. Interestingly though, the light turns on when I am looking away! When I look straight at the object being lit, the light then turns off. Very interesting. I've also set the default quality setting for the Android platform to ultra. In the editor, the lights work fine. These issues only occur in the built APK on the Quest. I've also set the light (spotlight) to Important, hoping that would make it stay on, but nothing changed. If it matters, I'm using URP. Has anyone run into a similar issue before? Am I missing a setting somewhere? Thanks in advance.
Bwavo.