Cold start problem with Roku Ultra

We replaced our 2017 Frame with the 2025 version, both 55”. We leave it in Art mode at night, motion and light detection seem to work properly when we enter the room in the morning. However, the first time we transition from are mode to view the Frame reports that the Roku is not connected. So far, I’ve corrected the issue by unplugging the Roku HDMI cable and reconnecting, but I don’t think it should work this way.

Any advice? All updates appear to be current.