When I set the appearance > scheme to Breeze Dark and change the colors for active titlebar, for instance, it is not applied. What I expect is that scheme is changed to Current (works) and new settings are applied to the window (doesn't work). 
When I select any other theme (e.g. Oxygen) and fine-tune something the Breeze Dark is applied (Oxygen disappears). Plus, "default" scheme looks like bright Breeze but applies the dark one, or rather what was selected on start.
Predefined themes work as expected.

Reproducible: Always

Steps to Reproduce:
1. Select scheme
2. Fine-tune color
3. Apply

Actual Results:  
Nothing happens

Expected Results:  
Scheme is tweaked