I use a Pre-Comp that's then made a 3D-Layer following the rest of the animation. It's visible when moving the Cursor in the timeline, but completely disapperas when preview is looping.
On output rendering it's also completely gone. Some other 3D-layers that show up correctly in the preview are completely off and are rendered in other places when output rendering.
So I am back to 2014, but I would like to get this working in 2015.
Are these known bugs that will be fixed soon?
Doesn't look like it.
Give them as much technical info as you can. Let them know if you can share the project file.