I’m not sure of the developers are aware of the issue, but there has been an issue with mouse turning (with the right click button) for quite a while. It seems to primarily affect users with logitech and razer mice. These two threads do a pretty good job of describing the problem:
https://forum-en.gw2archive.eu/forum/support/tech/Razer-Mouse-Right-Click-Problem-Fix/first#post3507198
https://forum-en.gw2archive.eu/forum/support/tech/Mouse-losing-focus-right-click-to-turn-not-working-Merged/first