Just in case anyone else is having a problem, I found that it flickers when I am on Studio Display + Light Theme. If I move the XCode window to the laptop display, it will not cause flickering. I have just found that on dark theme, flickering does not occur in any of my setups, whereas light theme causes flickering, just like shown in the video (top right corner). I want to repeat that: flickering only seems to happen on Studio Display for me. XCode Version: Version 26.3 (17C529) MacOS: Version 26.3 (25D125) Hardware: Apple M1 Max