The video doesn’t want to stop shaking. The video browser frame blinks in and out when trying to watch a video or do anything in that browser frame. The scroll bars flash in and out causing the video to move back and forth in a rapid motion.
I have tried to upload a small screen video but a .mov file isn’t accepted. If there is an upload sight I can upload the video that shows the problem. The issue seems to get worse with Safari browser v. 15.5 (17613.2.6)