Volatile projectiles and the spawning plant invisible until they hit the character

Thought it was my imagination the first time or the vines/trees that spawn the volatile projectiles were off screen or hidden by the boss/mob (whihch seems to happen quite a bit) however three deaths, three volatile plants and the projectiles NOT showing on screen until the purple flash at time of impact/death. Only seen in t15's? Rare's and bosses such as the treant both have shown this effect.. or lack thereof.

Volatiles are deadly enough as it is in high tier maps, not being able to actually see the projectiles or the spawning roots/tree/vine until they have exploded.. That's far too punishing and I don't think invisible projectiles or the spawner's are an intended interaction.

Especially melee toon's randomly exploding and only seeing the proj and the source AFTER the fact is..

Something else to look into please and thank you.

Three deaths, Same bugged interaction.. painful......

Thank you kindly. :]