Bookmarks bar too thin in new Firefox Developer Edition theme

The new FF DevEdition theme has a thinner bookmarks bar when in Normal density. The old bookmarks bar thickness is only on the Touch density setting. Is there a way like through about:config that I can have the "normal" density with the old thickness bookmarks bar? I am using: Firefox Developer Edition 57.0b1 (64-bit) on Aurora update channel P.S. There is a glitch where you can do this, but you have to do it for each open window. I want a permanent solution. The glitch: Go to Customize, add Flexible Space before Bookmarks Toolbar Items, switch to another tab and come back, remove Flexible Space, and exit Customize. Another glitch is by restoring the window, then maximizing it.