We're sorry about the poor experience. Is your workspace split across multiple monitors? If so, please temporarily disconnect the secondary display & check if it's working properly? Also, have you installed any third-party extensions for Premiere Pro?
Hello, I do have a second monitor, but no premiere panels are on the second screen - everything is in the main window on the main screen. Regarding extensions, I am only using Excalibur, however, these artifacts appear in a clean install (no plugins, extensions etc.) as well.