FK is working very well but IK is not. I need your opinion on the solution.

Development Character & Animation
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I exported my character from Blender to Unreal. As you can see in the first picture, the FK turned out great. But when I try to do IK for the same bones, the mesh doesn’t look like I expected. As you can see in the 3rd picture, the bones follow the IK nicely, but I couldn’t succeed in the mesh.

I’m using UE 5.4. I tried 5.3 but it is same.

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Unfortunately it is not solved but I do not recommend using the Blender Auto Rig addon. I used Game Rig Tools addon instead of Auto Rig and my problem was solved.