Using a Mac and SU Pro 15.
This just started happening.
I prepare drawing in SU, transfer it to LO. The tool bar header is there but no tools showing, hit menu, delete show toolbar, hit show tool bar. Tool bar appears then if i import drawing tool bar disappears again. Also when I hit import and it takes me to project list, then list is not appearing anymore. (I can’t get the list open to allow for picking a .skp to import.