The Default Folder X 5.0.4 has a new Drawer function which is basically a pull down holding place on Finder (using 10.11.5 beta 4 but also happened in 10.11.4). Very handy place to store things you will reference later.
When TotalFinder 1.7.12 is active the DFX drawer toolbar button shows on Finder window but does not activate the pull down drawer on the bottom of Finder window. If TotalFinder is inactive it works as advertised in DFX.
It would be great to resolve this compatibility issue in a future version of TF.
http://www.stclairsoft.com is the DFX vendor.