Trying to create a dynamically reflective sphere with a bloom after effect.

Ive got a reflective sphere with an orbiting cube that gets properly reflected when no after effects are applied, However when I use effectcomposer with bloom the cubes image drags across the sphere. What it looks like its doing is that when it updates the texture it just adds onto the old texture instead of making a new one with only the current position of the cube. I have tried everything I could think of to fix this including but not limited to: deleting and re adding the texture, deleting and re adding the material, deleting and re adding the sphere, adding a new reflection only once every few seconds in case the effect takes time to fade, and of course the standard set sphere invisible update cube map and set sphere visible. So I'm wondering if anyone has encountered this problem and if there is a known solution I've missed.