I was in the 6.8, now I do not - not the dashboard, not any of the unraid pages.
Also, I noticed that when that happens all the websockets (and ajax calls) are failing - even if the dashboard page loads, the dockers or unassigned devices aren't going to be loaded, or maybe one the them will load, another will fail. I can't even shut down/restart from the gui - I need to time it between web server restarts. And the web terminal restarts every few secs, so my "fix" can only be applied via the normal SSH.