Panzergrenadiers don't want to build

[Leonida [525]]

Hi all, I often see PE panzer grenadiers bugging each other when player orders them to build, so sometimes they take like more than 5 seconds to position theirselves for starting to build barracks, this is annoying especially when it slows a bit the start of the game. Not a big deal, but it happens only with them. Is it a known issue or are there ways to fix this? Thanks