I have an old Loc-on stand with a chain and have not had any problems.

The key is that you have to hang the stand, with most of the slack out of the chain. Once you climb in the stand, with you harness attached, you should jump/hop on the base of your stand at the position closest to the tree trunk. This action will set the stand firmly in place.

Doing this, I have never had any problems.

Good luck.