https://bugs.winehq.org/show_bug.cgi?id=28942
--- Comment #9 from S silas-wine@flatline.org.uk --- This bug is not present when running under WINE 1.7.33 in Mac Wineskin. Text can be copied out just fine.
However, when I tried WINE 1.9.21 on the same platform, it could not copy out the text (and rolling back to WINE 1.7.33 restored this functionality). I don't know if that's a regression or a new bug, some time between 1.7.33 and 1.9.21. I have not yet binary-chopped through intermediate WINE versions to pinpoint exactly which one changed it, but could do so if there is developer interest. Meanwhile I suggest WINE version 1.7.33 on the Mac (at this for this application).