Retargeting from Mannequins cause target model to implode

So, when I import my model from Blender to Unreal, the model’s size is fine and side-to-side, there is no problem

I go to auto-generate the retargeting and these looks fine

The problem arise when exporting the animations from the IK Retargeter cause the model to “implode” on itself

If anybody had this problem before and knows a fix, please help.