Hi milkywaif, 
 
> There's one thing I don't quite get. Why does it start as tabs collapsed? 
 
That just happened to be the easiest way to code it. 
 
 
> Is there a way to force scene browser tabs expanded at start up? 
 
Currently there isn't any way to do it. In the future I want to make the scene browser open/close state get saved in a 3DM file and restored when loading that 3DM file again. Then at that point you'd be able to control it at start up by setting up a file and setting it as the startup template file. 
 
     - Michael 
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