Here is a bug I noticed. When I went to reflash the firmware, I first saved all the settings on the Router. I then restored them on a Node I had already flashed. It took seconds to swap in the replacement outage, so I was expected my wife could continue to watch TV just fine. My experience has been anything less than 30 second downtime will not be an issue. But nope, afterwards I found plex was no longer working. It turns out the firewall port forwarding rules were NOT restored, which took out the ability for the Roku to talk to plex.
I noticed none of the static DNS rules were active, but as soon as I opened the dialog, they all showed up for me to reapply. So there we only missing for the time it took me to notice the problem.
I do find it a bit problematic that a restore of the configuration is not restoring everything. In some ways that is worse than not having a restore feature, because if it didn't exist, one would at least note everything to restore manually.