Update from 25.7.8 -> 25.7.9 went without error and I was not prompted for a reboot, but the web UI became unresponsive afterward. Internet connectivity was not affected.
A reboot command from serial console brought everything back. Looks stable now :)
I've also updated from 25.7.8 to 25.7.9 today trough the Dashboard [System:Firmware] and everything went fine, though never experienced this Dashboard hiccups(I use Firefox) but wondering why some users are reporting this issue after updates.
However I've experienced this problems in the past with some Rpi/ARM distributions running from bare slow USB/SDCard media, but that's expected unless the system is loaded/running from RAM disk, and/or when testing on older hardware with limited resources.
Regards
I thought it was an issue with the login session at first, so I hit 'refresh' in the browser to see if it would drop me out to the login screen. Unfortunately it was not responding.