MaxIdleTime vs. MinPoolSize in XAPool

[Tokamak23]

According to the wiki, the pool size should not drop below the minimum pool size when the maximum idle time has been reached. Unfortunately, this is not the case. In our system we had a minimum pool size of 300. 297 were idle and only 3 were in use. This results in closing 297 idle connections within the PoolShrinkingTask and re-open them again within the same method: XAPool#expireOrCloseStatefulHolders