soul mobs with the projectile protection dome can die, and the dome will stay behind

sometimes when you kill a soul mob that has the blue soul shield projectile protection dome, the dome / bubble will stay behind and its still fully functional. its hard to reproduce but ive seen it several times

1. summon a soul mob with the shield or find one

2. kill it immediately after it spawns in

3. the shield / bubble will stay behind on the ground and still be functional and block projectiles

ive had good luck having this bug happen during soul storms, using rapid fire harp crossbow with fireworks and ricochet to kill mobs as they spawn in. see attached video