Is there an issue with Pre-Comps and with the Collapse Transformation enabled?
I have a Pre-comp that has various layer modes in it and in the main comp, the Pre-Comp has collapse transformation enabled to see the layer modes so the text can blend into the background (otherwise the text is just a flat color).
The pre-comp works completely fine until I add a mask to it or say a expression control and then all of a sudden the collapse transformation stops working and the text loses it's properties.
This cannot be working as intended...otherwise I can't do any sort of reveal with a mask with anything that is pre-composed and has any sort of blend modes within the pre-comp.
The pre-comp also loses it's collapse transformation if you even put a expression control on it.
Contrary to what you think it works as intended. Effects require rasterization as do masks. This is inherent how AE's render pipeline works. You need to restructure your project.