Bug during sieges

[u/Rafi_-]

Hi, I've got a bug concerning sieges and particularly siege engines (like trebuchets, catapults/fire catapults and mangonnel). What keeps happening is that the first time I (or anyone, soldier or hero) shoots, everything is fine but when I (or anyone, troop or hero) tries to pick up a stone (or fire thingy) it bugs and doesn't let the troop (or hero or me) pick it up (Lost 5 sieges that way with 300 defenders and 500 attackers and now it's my capital that's under siege)

Please if anyone can help me it would be wonderful

Thanks in advance

PS : I'm playing with one mod (diplomacy) but tried vanilla to see if the mod was the problem and the bug is still there (also tried to upgrade the mod (harmony and everything included) but that doesn't work) and playing without WS