After update to 2021.1 ZHA behaves unstable

Dear All,

After latest update I am experiencing all sorts of problems with ZHA integration.

  1. Straight after reboot I’ve got the msg that ZHA failed to load and all my zigbee devices gone… I decided to reboot again and It took 2 hours for RPI4 8GB to do that! Eventually I had to reinstall this thing to make it work again. And now I am getting error msgs in the log related to ZHA, but do not understand what those mean:

Logger: bellows.ezsp
Source: /usr/local/lib/python3.8/site-packages/bellows/ezsp/
First occurred: 21:39:13 (8 occurrences)
Last logged: 21:40:09

NCP entered failed state. Requesting APP controller restart

What does this suppose to mean?