Extra rewards in epoch 213

[sandtreader]

There are 2 rewards in epoch 213 that look to be paid to stake addresses when they should have been paid to treasury, presumably because they have been deregistered:

2025-10-28T17:43:16.165683Z  INFO account_state.handle_epoch_activity{block=4640673}: acropolis_module_accounts_state::verifier: Read rewards verification data for 369 SPOs epoch=213
2025-10-28T17:43:16.180903Z ERROR account_state.handle_epoch_activity{block=4640673}: acropolis_module_accounts_state::verifier: Extra reward: SPO c63dab6d780a74cbae2a27696c9723f55b3092b2bd001256df03827f account e1d6db9781be2e95d8d34994f88639a437193e091b5173796ece90b3fd Member 32878907
2025-10-28T17:43:16.184735Z ERROR account_state.handle_epoch_activity{block=4640673}: acropolis_module_accounts_state::verifier: Extra reward: SPO ec7871705e483ac323f53c0f68f9c776a72b785967c444c9bf119393 account e1743ac0310f7c1f587b194ec23767ffb985f9a38545e4b062bf7f17ea Member 20802716
2025-10-28T17:43:16.185745Z ERROR account_state.handle_epoch_activity{block=4640673}: acropolis_module_accounts_state::verifier: Rewards verification: errors=2 epoch=213
...
2025-10-28T17:43:16.209045Z  WARN account_state.handle_epoch_activity{block=4640673}: acropolis_module_accounts_state::state: SPO reward account e1909afe68d94168a7a5ad9d7cfcb7305628a82f1e0dbb94c83dc1191b deregistered - paying refund to treasury
...
2025-10-28T17:43:16.209083Z ERROR account_state.handle_epoch_activity{block=4640673}: acropolis_module_accounts_state::verifier: Verification mismatch: treasury for epoch=215 calculated=55876244126033 desired=55876297807656 difference=53681623

Note the treasury difference is the same as the sum of the extra rewards paid.

[sandtreader]

Note that because the reserves have not diverged, the calculation is correct, they have just been misdirected. This could be an aspect of the Shelley reward calculation timing weirdness, but it's too soon to say.

[sandtreader]

Was still paying even if the account was deregistered after the rewards were calculated but before payment.