- Single artillery is attacked directly and loses x% health (from 10-90)
- Artillery survives attack, and is added to nearby stack of, for example, 20 artillery units
- Even if artillery health is at 90% AND 100 GM is used to heal artillery, the entire stack gives a fraction of the damage (30hp per round -> less than 5hp per round)
I'm on Petruz's discord server and showed SS of events on there. Users such as GB were saying it was a commonly known bug (I couldn't find a similar thread/report despite searching) and the only solution is to kill the damaged artillery. At that point it was already in a stack of 30 and very difficult to single out, especially in heat of war.
This bug had a major impact on the map in question, and if it's as common as S1914 discord server users were saying, I would imagine a lot of people have lost maps because of this.