I’ve recently encountered some frustrating behavior with Inverse Kinematics while using the Roblox Animation Editor. I’ve found a somewhat older thread with a similar issue, but none of the feedback from there seemed to help fix the issue. Animation Editor 3.0 - Rotation/Position bug - #10 by EchoReaper
As with the other thread, the issue lies with the torso. Whenever I try to manipulate either the Upper or LowerTorso of an R15 Rhtro rig, some odd snapping occurs when I clear my selection.
Visual explanation: Unusual Snapping
This has been a consistent issue when I move/rotate either torso. I’ve double checked that I was on a new frame, I’ve made a duplicate rig, and I have also restarted studio. To no avail, it’s still snapping forward.
Edit: It appears this isn’t just an issue with IK enabled. Issue has been persisting with default constraints as well.