BI 4.5.3.4 and 4.5.3.5 came out since this thread started. I went ahead and updated to 4.5.3.5 and have not noticed any issues, but that doesn't mean there aren't any.
We have experienced this issue on 4.5.3.5. However, Incog tab on chrome works only after you spam refresh for a while... for some reason... For the record, All caches were cleared and the browsers were cleaned prior to going incognito. Tested on 3- 4 different machines. Even with a buggy update the app never gave us any issues. Only the webui.
Think I might wait for some more time. I don't need additional security. I am behind 2 tunnels. VPN then SSL tunnel. Got nothing exposed to internet, other than 1 VPN port.
I updated to 4.5.3.7 but got more issues. Takes ages to open the console, then when clicking on a video stream it crashes.
Back to .2 for a few weeks. Not more instability until all these issues are resolved.