In this scene,i use “cast cloud shadow” in drectional light.
Then,with the cloud density (or weight) grow,I found such thing.Like thunder in the cloud but actually no,just a standard cloud.
When my cursor hanging on something in the editor,it must trigger this effect.
In PIE,the probability may lower,but not gone,it may trigger by my key bind.
So what cause this thing,and how can i avoid? Or a bug?