User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0 Build ID: 20161209093710 Steps to reproduce: According to other issues https://bugzilla.mozilla.org/show_bug.cgi?id=713802 gio is enabled for firefox. When I try and upload a file, Gio locations are not shown. Actual results: It's a pain if you are using remote files since you need to copy them to a local location using the file manager. Expected results: I should be able to chose files from gio file locations. Clicking the "other locations" button in the gtk file dialog should let me add locations.