Flickering issues when running iOS apps

When GL.Clear is used in Unityios, and flashes outside the first two areas as shown in the image of the link.

[link] https://youtu.be/ssjkWWs0-4Q

Is it related to Addressable?

I'm asking you to borrow your knowledge because I don't have any data when I search, and it seems to be a problem that didn't happen anywhere else.

Flickering issues when running iOS apps
 
 
Q