Just to add a bit of my experience.
I have been using "node-red-contrib-harmony" for years with no issues. About one week ago, I deleted all used nodes in my flow since they were not in use any more and some time later, I got the "The flows on the server have been updated" message quite frequently, just minutes between, and only one browser active. To see if it was a browser problem, I switched from Brave to Firefox but that was exactly the same.
I also noted, in the system log, this message on NodeRed startup:
"error: Error: connect ECONNREFUSED 172.16.0.91:5222"
172.16.0.91 was my Harmony hub but this IP is now taken for another unit.
After removing the "node-red-contrib-harmony" from my palette, the problem disappeared.
