I have encountered a really really odd and 100% reproducible bug.
If I go to pbx.mydomain.com:81 and I go to Device Management and try to select say softkeys (Grandstream GXP2130, 2160, etc) I am unable to do so. The “button” is completely unresponsive.
If on the other hand I go to pbx.mydomain.com/ucp and I go to device manager I CAN select softkeys etc.
I have now seen this on about 5 computers, and it seems to be 100% reproducable!