It would appear the original issue reported while in EXP, even though marked as done, has not actually been fixed.

I am having same issue with TrackIR after 1.7 update. When I start to build a structure or get into vehicles driver position my character head turns to 180 degrees. I have to hold Alt key and use mouse to return head back. This happens constantly when I try to build, and less when I get into driver seat. TrackIR worked fine before 1.7 update. Another problem is when character running sometimes. When I walk Trackir works fine, when I press Shift to run the character head jumps to look up, when I release Shift key character head returns back.

@l909 Found the problem / cause. It is a recentering issue with Freelook. Please get this addressed.
To Reproduce:

1. Make sure Freelook view is centered with TrackIR. The best way I have found is to ADS then tap ALT.

2. Climb or descend a ladder and during that time, move the mouse. Any input from mouse will cause the issue.

3. Get to bottom and tap ALT. The view will SNAP off center.

4. NOTE: any mouse input during any animation, like getting in a heli, car or vaulting, repairing, will cause this issue. Any mouse movement when Freelook is automatically active or ALT induced will cause the issue, like while in a car, or while using ALT to look around in the heli.

Freelook needs to automatically recenter with the players / TrackIR view.

For the love of GOD!!! There is no reason to have Freelook automatically active when TrackIR is in use. It should be like the heli across the board, where ALT must be pressed to enable Freelook, but even then, Freelook needs to recenter itself once ALT is released.

Sorry for poor quality. 25mb limit is usually not big enough to explain game issues.

When driving a vehicle in 3rd person view freelook doesn't work to left side, only to the right side. To make it working again I have to look maximum to right and make full 360 degrees circle. After that free look starts to work as usual and I can look to left and to right. But it works until next use of 3d person view.

How long does it take to "Test Internally" when the exact steps, if not the cause (freelook) of the issue has been provided? Do you need to borrow a TrackIR? This issue has a huge impact in TrackIR users because view always has to be corrected to be able to perform an action. Creating a another ticket because it seems BI has dropped the ball or is just ignoring it.

After sitting on MG nest gun position about 1-2 minutes the turning MG to one side stops to work. I am not sure if it is related to TrackIR problem though.

The problem still exists after update 1.8. It is hard to take a driver seat, it is hard to make build operations, it is hard to make repair operations on helicopters, it is hard to observe in 3d person view while driving a vehicle. It happens not all the time but often enough to be annoying. I am curious if anyone from developers play with TrackIR to encounter this annoying problem.