devtrackers.gg
Ha, came across this yesterday and raised it within the internal QA channel.
It had already been bugged and a fix made.
Dang, that was quick! :D
Just out of curiosity: If you don't mind sharing, what is the technical reason for clickbox issues like this?
It's likely something related to the BAS the NPC is using.
BAS stands for 'Base anim set' and contains things like locomotion and idle animations. It sometimes occurs that an idle anim being played offsets, thins out, or even expands the original clickzone.