Can't rearm a mortar when another is close

[Bonvi]

Game version:
v1.8.0.4

Map, gamemode, layer:
Any (video is Silent cq 64)

Server name:
Tested on local and 777

Description / Steps to reproduce:
When mortars are placed maximally close to each other, one of them eats all the ammo, can't load the other.

Video:
https://youtu.be/jBtjrxKkpus