A new Mac version has been released v22.214.171.124 and I can confirm that the filament usage is once again being recorded.
I have created a new post for another problem where the File Name and Size is not displayed when opening a new .stl file. I quick workaround is to rotate the job then the Filename and size will update: http://bugtracker.zortrax.com/tracker/issue-131-z-suite-v1501-mac-not-displaying-file-name-and-size/
Z-Suite crashes after searching query in the library.
Using MONO slows down the speed of slicing a lot, other slicers usually took few seconds where Z-Suite took minutes.
It won't even work for me, opens and then crashes. Tried a variety of versions of Framework. I'm running OS X 10.9.5.
I gave up and reinstalled 1.4.1.