Gala segfaults when RubyMine's autocomplete dialog is activated.

Here is the console output gathered while running 'gala --replace' in the terminal:

Window manager warning: Window 0x2a00069 (win3) sets an MWM hint indicating it isn't resizable, but sets min size 1 x 1 and max size 2147483647 x 2147483647; this doesn't make much sense.
Window manager warning: Window 0x2a00069 (win3) sets an MWM hint indicating it isn't resizable, but sets min size 1 x 1 and max size 2147483647 x 2147483647; this doesn't make much sense.
Window manager warning: Window 0x2a00069 (win3) sets an MWM hint indicating it isn't resizable, but sets min size 1 x 1 and max size 2147483647 x 2147483647; this doesn't make much sense.
Window manager warning: Log level 8: meta_window_unminimize: assertion `!window->override_redirect' failed
Window manager warning: meta_window_activate called by a pager with a 0 timestamp; the pager needs to be fixed.
[1] 10878 segmentation fault (core dumped) gala --replace

RubyMine is a Java program, BTW. It expects a reparenting WM, which Gala/mutter is not. Not sure if that's relevant to this crash, but I have been needing to use wmname with RubyMine and other Java apps so that their menus behave correctly. The above crash happens regardless of wmname usage.