I have been making some experimantation on using the Brush and Eraser tools in AE CS6 - 11.0.4. There is a situation i don't understand. I will try to explain the problem step by step:
1) I create a simple Brush stroke with Channels set to "RGBA" on an object with an alpha channel.
2) Then i select the Eraser tool with Channels set to "RGB" (or RGBA) and Erase set to "Last Stroke Only" and i delete some part of the Brush stroke i created.
The problem is that when i do this, i see the result only in the Layer Panel; not in the Composition panel. Comp panel just doesn't update. Is this some kind of bug or i am missing something? (When i do the same thing with Erase set to "Paint Only", i can see the result in both panels).
Here is a screenshot. Layer panel on the right, composition panel on the left: