Night Light on = UI overlays flicker Pixel 7a,. Off = perfectly fine

Johnuuu

Device: Pixel 7a
OS: GrapheneOS (latest build)
Issue: UI overlay flickering when Night Light is enabled

Description:
When Night Light is active (any intensity level), the UI compositor drops overlay elements intermittently. Specifically, the bottom browser tab panel (Share, Edit buttons and tab preview) flickers in and out randomly. The main screen itself is fine — only layered UI elements are affected.

Steps to Reproduce:

Enable Night Light (Settings → Display → Night Light)
Open any browser (tested on Vanadium/DuckDuckGo)
Open the tab switcher or pull down the quick settings panel
Observe bottom UI overlay flickering

Expected Behavior: UI overlays render consistently with no flickering

Actual Behavior: Overlay elements disappear and reappear intermittently

Additional Notes:

No physical screen damage
Issue persists at all Night Light intensity levels
Does not occur when Night Light is off
Screenshots attached showing the UI element present vs completely missing in the same session
https://postimg.cc/gallery/RZTv0tK
I don't know if you can see in the photo but it is flickering

Johnnyloans

Mate, next time you gotta write this yourself then use any translator service if you need it.
It may be too late and they will find us.

As to your issue:
I've never had this issue on my 2 GOS phones. I permanently have night light on. Does it still flicker with night light completely disabled? Sounds like a hardware issue.

GOS has a quick tile to record a video of your screen. Record a few seconds then watch it on another device or while your phone is landscape. That'll confirm it.