1. When you spawn with construction site OR one construction material and then use it - 3 of your slots (that are supposed to be free) are "full". For example you spawn with bow and siege ladder, put siege ladder and then try to pick up arrows you drop the bow. To fix it you need to change you equip after you deploy ladder or site OR pick up 2slot weapon.
2. Catapults blow up after 1-5 shoots (usually 3). No matter where you shoot and how many catas you have. It never happened on any other servers (we started our own server to test and practice) and also on other servers and in any other game types (strat battle or duel). This bug only happened during strategus siege. This makes it impossible to use them on siege in strategus.
3. When catapult blows up, invisible cata appear in their place, and you can't move through it and also you can see all buttons ("switch the brake", "pull the arm" etc)
4. At some point construction material counter stops dropping in inventory, however you can keep spawning them until they really finished. Once they are finished they still can be chosen in inventory. After you relog you can see that they are finished.
5. Ladders break too quickly, even before they reach the walls. We tried to spam 6 ladders at the same time, and still we couldn't get on the walls, not one. Because they all got broken before reaching the walls. (The only times we got on the walls when defenders wasn't looking at the wall that we attacked.)
6. "Elevator" exploit. You can get on the walls on the roof of raising siege tower.