[KWo]

Originally Posted by Skissors for the bots, they sometimes get stuck above a weapon they want to switch to, and will not shoot at you sometimes. I had encountered this same problem before in gungame when i restricted weapon pickup of non-same level weapons Bots: POD-Bot

If You are using V3B17 there shouldn't be the problem with bots not shooting (it was somewhere in V3B16e-h versions).
About bots trying pickup the weapon - they don't know they cannot pickup that weapon, but after 5seconds they unstuck - they mark the entity as "un-pickupable" and they don't try to pickup it anymore.
I don't want to change the properties of dropped weapon, because if another owner of limited weapon drops it or get killed - You should be able to pickup that dropped weapon again (or if the admin will change in the game the limit per team).