Multiple savepoints inside the same parent transaction collide

Multiple savepoints inside the same parent transaction collide: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). I'm using nested transactions to get savepoint behavior. When I run several sibling savepoints under the same outer transaction, they end up referring to…

The task

I'm using nested transactions to get savepoint behavior. When I run several sibling savepoints under the same outer transaction, they end up referring to the same savepoint name on the SQL side and step on each other.

Part of FineEnvs/MiMo-V2.6-RL-harbor-code.