Hey having the same issue here - track attached
Use UFC to enter a HDG
Engage BALT, then HSEL
HSEL doesn't capture - selection colon appears on HSEL, but no appreciable flight control change
Move HDG around, turn HSEL on/off --> plane now rolls to start banking in the direction of selected HDG but never unbanks / holds heading
Tried changing the HDG with HSEL on, and it doesn't react to it (i.e. in typical behavior if you move the selected HDG, the plane will bank to now follow the new heading, including reversing direction of bank as needed, here it doesn't do any of that)
Thanks in advance for your help.
TryingHSEL.trk