Node Red connection failed to HA after update Core to 2023.6.1

After Update Core to 2023.6.1 Node Red is connecting and disconneting to http://supervisor/core in a loop, so no flow can be triggered. After a restore to 2023.5 Node Red is connecting to http://supervisor/core and flows are working. Any idea what I am doing wrong?

same here…

Same here.

Lost my connections in 2023.5
See a lot of status code 400 in the node red add-on log

In my case it seems to be related to the size of data passed on to the websocket. i disabled the unifi network integration that creates a ton of entities and it went back to normal.