Submitted by shw
The getInitialUnstakeEntry function of PoolBase returns the first active unstaking entry of a staker, which requires the current block to be strictly before the last block in the unstaking window. However, the unstake function allows the current block to be exactly the same as the last block (same logic in unstakeWindowExpiry).
Recommend changing the <= comparison at line 136 to < for consistency.
Evert0x (Sherlock) confirmed
