The current IGG version seems to have a bug for me, where the constructor doesn't work properly. It seems to only work the very first time you use it, if you switch the blueprint or switch weapons/items it seems to be completely disabled. Completely exiting the game and restarting seems to make it work again(but if you switch the blueprint youll need to do it again). Not completely game breaking but not fun. I checked an update log and i did not see mention of it, no clue if that because it was not fixed, or the IGG version is the one with the issue.
well well well