@GeeStoerty
The regression of doors not opening in the PC-24, PA-28, Saab 340 & Beechcraft C90 all appear to be caused by the same regression listed in the release notes as fixed for the PC-24 :
The doors can be opened now on all four aircraft.
The issue with the Piper PA-28 is a bit more complex. Most aircraft have a single animation step for doors:
Closed <-----> Open.
So this only requires a single toggle key / button binding.
The Piper appears to have two animation steps:
Closed <-----> Latched <-----> Open.
In cockpit view, as noted above, one needs to unlock the front & top latches (this is the Closed <-----> Latched animation step) before the door handle inside the cockpit will work (the Latched <-----> Open animation step).
As @DementedCorn327 notes, in external view, closing the door only takes one to the “Latched” position. This is correct code-wise, as the “Open Door” toggle key / button binding triggers the Latched <-----> Open animation, but is incorrect visually, as obviously one wants the door to fully close.
The solution may require adding an additional click-spot to the exterior of the door so one can trigger the Closed <-----> Latched animation sequence.