Yikes! Thanks for letting us know it's such a problem. We don't currently have a way to adjust the height calibration, but it's something we want to implement in the future! There are no additional scenes using a hip / pelvis while standing, so you shouldn't have any more problems like this. However, let us know if slaps or other interactions are wildly off!
Viewing post in Hips / penis at the wrong height
Heya, just discovered this last night and I wanna add my experience to this! Height calibration option would be wonderful - I'm maybe on the short side since the poses where I'm supposed to be standing up straight get me tiptoeing a bit to get my HMD positioned proper. Not so bad but occasionally fiddly. Just adding a bit of demographic info. :) Keep up the great work!