After opening a level a group containing a model doesn't not render as expected. It will not show unless the cursor is hovering over it. After duplicating any object (alt drag) it will render correctly.
Note
It does render correctly when in play mode, this only impacts editor mode.
Summary
After opening a level a group containing a model doesn't not render as expected. It will not show unless the cursor is hovering over it. After duplicating any object (alt drag) it will render correctly.
Note
It does render correctly when in play mode, this only impacts editor mode.