Just installed a new copy of Shortcut on Windows 11, this just started happening. Never happened on my other installs on Windows 10 or Ubuntu. Works at bootup, but breaks after using it once or even just selecting another clip. Can someone tell me what’s happening?
This usually only happens when your video cannot be decoded or it is very slow to decode and then appears after a second or so. I do not ever reproduce it in general, however. Did you restart Shotcut and try again?