Have a temporary setup running while the house is being built.
HA is running in the “unsupported environment” on top of Ubuntu 20.04 Server.
Recently had one wire disconnected from the USB modbus adapter.
For the modbus have a configured climates and several sensors.
This should have been no fuss at all but HA behavior was extremely buggy and strange. Lovelace didn’t work. Stuck on please wait or black screen unless rebooted. After the reboot it showed up for 5 minutes and after that a black screen or please wait. After reconnecting the wire to the modbus everything is back to normal. I believe this is not a normal behavior as the component should have been ignored if faulty as others (using HA for almost 5 years already)