Slitherine

Moving a sleeping unit should remove the Zzzz? The unit moves but then is still in the Zzzz state.

I don't that mind actually, but it might be confusing yeah.
For me there is some logic though, you need to double click the "Zz" button to put it to 'sleep' and then you need to click on "Zz" again to activate it again, even if you have used the unit.

It just means you can make a single move and the unit will continue snoring.
You save 3-4 mouse clicks.

Have never used sleep functions in games like this, never found a need for it.

Fair enough - but unusual in games of this type and to me a little odd.