http://bugs.winehq.org/show_bug.cgi?id=58951
--- Comment #1 from Brandon T brandon@garagebay9.com --- Further testing has shown this appears to reproduce in all Stable and Staging builds (minus one or two I may have inadvertently missed in that very large swath) back to at *least* Wine 8.
Wine 10.18 (non-Staging) has a different issue that makes this untestable - the OS file dialogs normally triggered with Load / Save / Import / Export do not open at all.
I will confirm that issue with a clean ground-up prefix install and open a separate bug.