Regarding the issue of not being able to use mouse look in Falcon BMS when using OpenTrack.

I have discovered that when OpenTrack is installed, mouse look becomes disabled in Falcon BMS

https://forum.falcon-bms.com/topic/25755/older-freetrack-npclient64-dll-to-enable-looking-around-with-mouse-with-opentrack-paused/6

Through the information in the forum post at the URL above, I learned that the issue is caused by NPClient64.dll. I also confirmed that replacing the file with an older version of NPClient64.dll from the provided download link resolves the problem.

After that, a new issue occurred: in IL-2, OpenTrack running with the older version of NPClient64.dll does not function properly

https://forum.falcon-bms.com/topic/18019/tried-opentrack-now-lost-ability-to-mouse-look-in-cockpit/13

In the end, by referring to the post at the link above, I began renaming the NPClient64.dll file whenever I’m not using OpenTrack, which allows mouse look to work in BMS.

I hope this will be helpful for others who are experiencing a similar issue.