Ive seen this posted several times, but nothing really recently.
Im running AE CS5. I am watching a youtube tutorial from 2017 and at one point the author grabs a layer that is 200px wide and pre-composes it and moves all the attributes. His new pre-compose layer is 200px wide.
Whenever I try to do the same, my pre-compose layer becomes the size of the entire composition (1920x1080).
Is there still no way of keeping the layer size during a pre-compose? Am I missing a setting or something?
At around 10:50, he pre-composes the layer and moves all attributes. This behaves the way you are saying (doesnt change the size).
However, right after that he clicks the "Collapse transformation" star on that layer, and THAT is what resizes his layer. I tried doing the same on mine, but it didnt seem to do anything so maybe I'm not using that part correctly.