Uploading Client Icon in Network Map causes router to reboot

[IsaacFL]

RT-AC1900P with 384.3 installed.

On the Network Map -> Clients -> Client status

If you click on an icon, then change, + , download a new icon. When you hit apply, it will cause the router to reboot.

I have not tried changing icons, in a while, but before it would just change the client icon, without rebooting.

 

[sn2018]

I ran into the same issue with 384.3 on RT-AC68U. One time, it rebooted. Another time, I got log out from system GUI. When I moved to 384.3, I used the "initialize" button from system GUI to erase NVRAM before setting it up. Change icons was the last thing I did to setup the router. Manual reboot was done after I setup static IP and after port forwarding before changing/adding icons.