Good news! I was able to fix the problem with the legs! So selecting LanaCan in the Hierachy and on the Inspector tab where the avatar is the LanaCanAvatar is click that. Then select the LanaCan.fbx that is in your project and click Configure Avatar in the Inspector. This brings up the rig and was messing with this til I found a place where it fixes the issue. So here I selected the UpperLeg.R and UpperLeg.L and changed the Z axis for Position on them to -0.0124 and for LowerLeg.R and LowerLeg.L I changed the Z axis Position to 0.0138 for both. Then just hit Apply and upload the Avatar! After that the crouch bug seems to be fixed and only very slightly changes the legs on the Avatar, I cant see it myself really. Hope this works for you guys :3
