@ask, just in case you’re not already aware:
At least I am currently unable to add new servers, getting the error message “Could not decode NTP response from trace server” on the page where the system should have checked the sanity of the server, and where it usually would ask to acknowledge I really want to add the server.
Possibly related, at least some of my monitors are complaining they can’t connect to the MQTT broker (have disabled logging to the system log for others so don’t immediately know how those feel about MQTT right now).