LayBrg °M is supposed to return the bearing of the LL the boat is heading to, but seems to return the bearing of the LL it is not heading to.
Example, tested using the Exp Simultator.
1.Boat is sailing on port towards starboard LL of a windward mark.
2. TWD = 0°M
3. Boat is sailing course 40°M @ TargetTWA 40°.

Bearing of the starboard LL (Brg on S °M) in this case is 360-40=320°M.
Bearing of the port LL (Brg on P °M) in this case is 40°M.

As the boat is heading towards the starboard LL I would expect LayBrg °M to display 320°M. But it displays 40°M i.e the port LL.

Layline distance seems to work o.k. though. It correctly displays the distance to the LL the boat is heading towards.