Intersect boolean in animation doesn't render properly and gives blackout/whiteout I'm creating an animation where a plane moves leftwards with a boolean intersect modifier, whereby only the intersect will show as shown in image 1.

image 1: frame 75, perfectly normal
However, this is not the case through the animation. What happens at (what i presume to be) random keyframes is a black or white boolean cube. This anomaly shows up in my video renders as well, as shown here:

image 2: frame 95, blackout

image 3: frame 128, whiteout
my question is, what the hell is going on and how do i fix it
In a recent version an &quot;Exact&quot; mode has been added to the boolean modifier. It is enabled by default, and it is supposed to handle non-manifold and co-planar meshes better than the regular &quot;Fast&quot;, mode, but it is also computationally very heavy and there are still edge cases where it fails.
You can try to toggle between &quot;Exact&quot; and &quot;Fast&quot; and see if it changes anything.
Also, booleans do not work well with non-manifold meshes (eg a plane) You can try adding a solidify modifier with a very low value.