Splash image flashing on ios

Hi!
Our custom splash image appears for a two second, then starts to flash (like a strobe) on and off on ios build. Android build works fine without flashing. Has anyone come across this issue or have any advice on how to fix it?
Unity version: 2020.3.14f1
IOS: 15.0 and higher
Splash image settings and flashing gif file attached below

8443985--1119410--ezgif.com-gif-maker.gif

Our custom splash image appears for a two second, then starts to flash (like a strobe) on and off on ios build.
Nope, never seen anything like that. Please bug report with repro project