Ok, I'm sure this is such a basic question, but suddenly when I highlight a layer in the timeline, or even it's position property, it does not highlight the layer's wireframe outline in the comp panel. Also, the position adjustment handles (the red, green, and blue arrows that adjust the x, y, and z coordinates) are also not visable and missing.
I already tried restarting After Effects with crtl+alt+shift to clear out the user preferences, and still the same behaviour. I think it might be an issue with a preview mode, but I could not get the various attempts to work either.
Any know the probably simple solution to this issue?
Go to the menu and select View>Layer Controls
You must have pressed Shift+Ctrl/Cmnd+H sometime.
You can also get to the controls by selecting View Options from the small menu at the upper right corner of the Composition Panel.
Yep, that fixed it.