report a bug and compensate for the members' losses. https://github.com/paritytech/polkadot/issues/7373

I have manually compensated for the loss of rewards (era 1107) in the pools.

subscan: https://polkadot.subscan.io/extrinsic/15987769-2

TX: 0x206c81928d800424350fab9dcfe1075ff7dc7e08fc2915088a791084934c414a