Strange physics simulation

I made hangings some cloth, tried simulate physics but one side keep snapping to root bone.

If i simulate ONLY one side, its normal…

Simulate both sides occur snapping

For my capsules, settings are default. Before i didn’t have root bone, just two chains, and it snapped to origin place.
I’m new to unreal, may it be impossible to work with two+ chain armatures?

somebody help?

If i simulate even last bone with right side, this bone will also snaps to the root bone