I'm on the latest OP RC. I have an Ender 5, and had the stock board. On that board, I always left the USB connected, and had a smart plug, controlled by MQTT to turn the printer off. So even if the printer was off, the board would still stay connected. On that board, there were no issues.
Now, I put in the SKR Mini E3, and apparently, it has problems when the board stays connected to USB and the printer is turned off via the smart plug. So I did the tape on the 5v trick, and it prints normally now.
However, before, using the PSU Control plugin and the MQTT plugin(@MQTTPublish command), the printer would automatically turn on and do its thing when I started a print job. But now, of course, the board doesn't stay connected when the printer is powered off. Part of the problem is that the GCode doesn't seem to run if OP isn't connected to the board, even though that @MQTTPublish GCode doesn't need to be sent to the printer.
Is there any way to have PSU Control still send the GCode to turn the printer on, and then connect automatically? Or is there some other workflow that would accomplish this? Right now, I have to manually turn the smart plug on and then manually connect.