Unless you have an extremely powerful build that can ignore all mechanics, playing forge guard shield throw with lava burst proc causes any vfx around you to become invisible, making the game unplayable. YOU WILL DIE because you are not able to see what is happening around you because of this, especially to persistent ground aoes that you won’t be able to see.
Here are 2 gifs of the error in action. The 1st being a simple demonstration and the 2nd being a real example demonstration of a boss fight where almost everything disappears.