Hello Creative Cow! I'm experiencing a confusing/frustrating bug in AE CS6 on Mac OSX 10.10.1.
I have a project built from imported .ai files, both as footage and as compositions. After I import a new .ai asset (doesn't seem to matter which file), and try to drag it into my comp, two things happen:
1. the layer jumps to the top of the comp, despite the position I dragged it to
2. AE seems to disable dragging altogether. after this initial 'break' occurs, I can no longer reorder layers in the comp, drag layers from project to comp, or reorganize project items at all.
I've tried reinstalling CS6, updating to latest Yosemite fix, and even downgrading project to CS5.5.
Important note: The new CS5.5 project developed the same bug, which makes me think the bug is in the project itself.