Im not sure exactly if this is the right component but; When a game launches fullscreen sometimes the decoration just breaks around windows. Switching with ctrl + shift + F12 toggles between; "effects on + corruption" and "effects off + normal" This shows how it can look with weird colours around windows; https://i.imgur.com/GoL1vAf.jpg I also noticed that decorations will flash from time to time, disappear also with a black bar or just creating a odd shadow; https://i.imgur.com/uQlCMeb.png Switching to oxygen when it happens seems to remove the corruption however switching back to breeze introduces this again. Reproducible: Always
*** This bug has been marked as a duplicate of bug 361154 ***