Seems odd to not have a redundant backdoor on a different network interface. Maybe that is too big of a security risk but idk.
You know how after changing resolution and other video settings you get a popup "do you want to keep these changes?" with a countdown and automatic revert in case you managed to screw up and can't see the output anymore?
Well, I wonder why a router that gets a config update but then doesn't see any external traffic for 4 hours doesn't just revert back to the last known good config...
Hmm, could be a UI/UX bug then :)