TotalFinder misses clicks from Macbook Pro trackpad

I noticed that often Totalfinder becomes completely insensitive to trackpad clicks (both physical clicks and double-taps on the trackpad). No other application has this problem, including the Finder.

So, if I use TotalFinder, often I am not able to click on anything (sometime switching to another window, clicking in there, and coming back to TotalFinder helps - but not always). So I am back to Finder for the moment.

Any suggestions?

Yosemite latest version on Macbook Pro mid-2009