Hi Michael,
Thank you for your quick response (on weekends!). I remove SeparateSidePanePalettesNotViewSelect.js, Solid and Curve are combined as I wanted. But I would really like to have Construct and Transform on two separate (therefore open) tabs because they are the two tabs we use the most. As you can see the selector is on the left. I think, but I could be wrong, that with this position it should work.
Can I make a modification to test the desired layout?

- Zooen