When pressing H to holster a drawn bow (left-clicking to draw the arrow back) caused my character's movement to become very strange. Jogging speed was reduced to around walking speed, though sprint and walking speed were unaffected. When jogging movement was also very jerky, starting and stopping very quickly. The running animation seemed normal.
When prone I found I moved very quickly, at least compared to the usual prone speed (probably the same speed as jogging.) Crouch sprinting was very fast (probably the same speed as regular sprinting.) It felt as though my character was locked to a certain speed regardless of my stance.
Attempting different animations (vaulting for example) did nothing to fix the issue. It may, however, have been fixed by left-clicking or attacking. I started punching a chicken and found I could move normally again. I wasn't really paying attention so I can't be certain if attacking fixed it, but it certainly seems possible.