What happened?
Once you create a build for a project in 2023.1.0b3 and start it, a visible white line is shown glitching above the unity logo on the splash screen. (See attached Image). There doesn't appear to be a pattern in it's flashing, as it seems random each time you start a build.

Successfully reproduced in 2023.1.0b1 , 2023.1.0.b3
Does not occur in 2022.2.6f1

Occurred when making builds for the following platforms : Windows, Game Core - Xbox One, Game Core - Xbox Series, WebGL using either Built-in render pipeline (RP), Universal RP or High Definition RP

Steps to Reproduce 

1. Create a project within Unity 2023.1.0b3
2. Navigate to Build Settings > Ensure that splash screen is enabled
3. Select Build & Run and wait for build to complete and start
4. Observe error on Unity logo splash screen

Expected Result
No visual glitches/errors are visible on the splash screen.

Actual Result
Visible visual glitch shown on the splash screen. See attached Image / Run attached build to see the issue.