in ubm v1.5 my german 9d2 boat always starts out too deep

in ubm v1.5 my german 9d2 boat always starts out in single missions too deep no matter what depth it is set to start with in mission editor. i dont really play the german side so when i found this it was a surprise to me, maybe you guys already fixed it in a mod but in single ge missions my 9d2 always starts out at a default depth of 17 meters no matter what depth i use in the mission editor. i went into the misge file and it shows it is at the depth i set it to but the sub always starts at 17 meters anyway and then as soon as mission starts it corrects this because it raises itself to my mission editor preset depth after the mission opens.

i set it to 10, then 12, then 14 but every time mission starts its at 17 again, something is not right with that. is my game corrrupted, has anyone else had this happen?

im playing stock 1.5 with no mods installed