The last two days when using a crossbow with infected, I have not been able to get improvised and upgraded improvised bolts off of infected with the crossbow in my hands (I have not tried this with a regular bolt). I have needed to put the crossbow into my inventory, put the bolt into my hands, then put in inventory, get the crossbow out and finally load the crossbow. I have been playing US - LA first person Chernarus Servers.
Minor matter, but wanted to pass it along. Thanks for all the hard work with the game!