A new upgrade of the relay chain to v1.4.1 is now up for vote: there was a bug found in the staking system which needs to be fixed — this fixes an issue related to staking in combination with nomination pools. This release pulls in changes directly from a custom Polkadot-SDK branch. The changes can be reviewed on the release.
The proposal is submitted on Whitelisted Caller track and Fellowship is voting on a whitelist.
Please review and vote at your convenience.
EDIT: Post-mortem can be found here: https://forum.polkadot.network/t/2025-02-25-double-staking-reward-bug/13244.
I'm delighted to be able to offer my support.