TotalFinder Opens New Window When Trying to Add New Tab

When the TotalFinder window is open and there are multiple tabs open, about 3, I click next to an open tab and try to add another tab. It opens into a new window instead. When I go to the dropdown and click New Tab it opens into a new window.

I tried to restart TotalFinder with Command Alt Esc. It restarted and was just a window with no tabs.

Thanks for any help.