My apologies. You did say it occurred on all screens in the first post. I was hoping it was just a matter of a corrupted screen saver, but that makes it sound like a defective unit. I'm glad a new unit fixed it for you.
Thanks for reporting back. I wish more people did that.
Roku Community Streaming Expert I am not a Roku employee, only a user like you. Please, no support questions via private message -- post them publicly to the Community where others may benefit as well. If this post solves your problem please help others find this answer by clicking "Accept as Solution.".
Streaming Stick 4K+ 3821 | Streaming Stick+ 3810 | TCL Roku TV 43S245/C107X