Firmware 1.10.1 i had my tailsitter configured to be pitch 90 yaw 180 as shown in the following picture,
But as of today, i changed it to master branch and tried to calibrate, i tried pitch 90 and yaw 180 first, but the orientations shown in qgc came out different. then i triedroll 90 pitch 90 and it resulted in correct positions.which is really weird. I think something is buggy with the orientations. addition -> however whether the roll 90 pitch 90 showed correct orientations in qgc, when i tried yaw direction seems reversed, so it yaws permanently.