A_TimeSincePriorHotkey, A_TimeSinceThisHotkey empty instead of -1

[Cobracrystal]

Description states

The number of milliseconds that have elapsed since A_ThisHotkey was pressed. If A_ThisHotkey is empty, the value of this variable is -1. The number of milliseconds that have elapsed since A_PriorHotkey was pressed. If A_PriorHotkey is empty, the value of this variable is -1.

should be "The number of milliseconds that have elapsed since A_ThisHotkey was pressed. It will be blank whenever A_ThisHotkey is blank." and "The number of milliseconds that have elapsed since A_PriorHotkey was pressed. It will be blank whenever A_PriorHotkey is blank." from ahkv2 docs

[RaptorX]

Confirmed they return blank on 2.0.13