Hey everyone!
The Air-to-Air (AA) mode on the TGP is not working properly anymore. Whilst it is perfectly fine in Air-to-Ground mode, in Air-to-Air you can no longer slew the TGP view over a target or anything - it's locked in place.
I've also just tested in stable version 1.2.16.43180, and it works perfectly fine, and this only occurs in the 1.5 beta.
I encourage everyone to try this out, I came across it when trying out the interactive Air-to-Air training mission in 1.5 for a laugh. I thought I was doing something wrong until I opened up DCS 1.2.16 and realised the TGP is broken in the beta 1.5.
Simply press the AA OSB option on the TGP, and try to pan around with slew controls. The view is locked to the bore sight, and cannot be panned around. it helps if you point the nose of the plane down so you have something to look at, then try slewing - you can't tell if you're looking into the sky :D
Hope this information is valuable!
Cheers.