Advanced 3D breaks Clone Brush

when working in the Advanced 3D space, the Clone Brush will only paint once on a layer that is a Composition. attempting to use the clone brush again, has no effect.

1.  have a Comp with one Precomposed layer, set current comp to use the Advanced 3D renderer.
2. On the Precomposed piece of footage, open the layer window. use the clone brush in the footage window (alt click to sample and then draw a stroke) - clone brush works 
3. attempt to clone again.
4.  clone brush will not draw again on that layer.

The clone brush will not be able to draw more than one clone stamp brush stroke. The brush tool can continue to paint, but not the clone tool. Footage layers are not affected by this as the Clone brush can paint on those without issue, it's only on Compositions. if there is only a single brush stroke on the layer, the clone brush will not draw. having the clone stroke in the effects-timeline selected should replace that currently selected stroke, but not here. switching the Composition to Classic 3D allows clone brush will allow the Clone brush to resume normal operation.