SPG shooting is no longer visible. I believe this is a bug, not a spec change. If it is a specification change, I think it is a weakening of SPG.
After the new update, the line of fire has disappeared at least after December 25th.
I have attached a video. At about 14:07, the self-propelled artillery of the opponent team is shooting from the bottom of the screen, but you can see that you can not see it at all.