haha, edge case ftw! This stuff is so hard to test by yourself
I think a quick workaround would be to go to the outliner tab, and under the legs, right click on the left leg twist bones and choose, lock selected. This will prevent symmetry mode from performing on those bones and their would-be mirrors. I just gave it a quick test and that does in fact work. Sorry about that, I’ll get it properly fixed up hopefully sometime soon!
