Plane Sailing
Astral Admin - Mwahahaha!
Ther needs to be something. It didn't bother me until the wizard ran in, touched a critter with reach and then ran back behind the cleric. Otherwise, no issue. There's a limit, though.
But the wizard only gets one move and one action - so surely it is run in, touch the critter and waits there. Monster gets to act. On his next turn wizard takes another action and runs out (or runs out and drinks his healing potion!)
I'm not sure how you are getting this spring-attack like option?
Cheers