I’ve had a bug with the Roblox Animation Editor for around one or two weeks, the bug is I cannot undo movements when using the Inverse Kinematics option, if I press Ctrl + Z, it does nothing, if I manually click the Undo button, it undoes the movement one by one (See attached GIF, I click the Undo button multiple times).
It also messed the rig up when going out of the plugin.
It works fine without using IK.