Some Kraken futures limit orders can still fill after a successful cancel

Kraken futures limit orders can fill after cancellation due to Maker Protection hold timing

Kraken's Maker Protection feature allows certain held limit orders to convert to immediate-or-cancel status upon cancellation while retaining their original release time, potentially causing fills after a cancel acknowledgment. The issue affects non-post-only limit orders canceled during the hold period following Kraken's October 8 expansion to 61 additional perpetual contracts.