Ok I think I have an idea for this. It was happening for me (only alternating between the same two pieces, even after multiple reboot). The "fix" was to toggle

Ok I think I have an idea for this. It was happening for me (only alternating between the same two pieces, even after multiple reboot). The "fix" was to toggle the "Resize small art to fill screen" which completely removes this repeated image effect, while re-enabling it brings back the problem. Edit: nevermind, problem came back after a few "Change art now" button presses, even after toggling all the checkboxes in the top-left.