Two bone Ik, Bug Twist 360


Can someone help me? I am literally begging! It’s been since 2019 that I’ve been suffering with this bug in Unity and I haven’t found a solution. This only happens with the IK system, no matter which version I use, whether the free one from the internet or the paid one from the stores. The one I’m using right now is the Two Bone IK, which I’ve used before, and it has the most bugs, out of all of them, literally for me. It causes these twists, not just in the legs, but also in the arms. I’ve even used the “The Heroic Human Digital” model, which is from Unity itself, and it still happens. So, it’s not me doing something wrong with the skeleton when exporting from Blender. I’ve tested several versions of Unity and this always happens, and it doesn’t matter which version of Two Bone I use, it still occurs.

Can you show a screenshot of your settings for the TwoBoneIK component?

Hello, yes.

It seems a bit strange. It appears that there is no problem with the settings.
(1) Is this distorted bone “RightLegUp”?
(2) If you set the left foot/left or right hand, will there be the same error? Or is there any way for me to reproduce this problem?
(3) You can set Hint Weight/Rotation Weight to 0 to see if it can rule out the influence of hint goal/rotation.
(4) Make sure there are no additional bones between RightUpLeg and RightLeg.

I’ve tried almost everything. I wonder if Unity’s Twisted Correction would help. I highly doubt it, I think I’ll try other options on the market. Thank you for your time, truly. See you later