I'm seeing this problem in Firefox 49, did not previously see it in 45. As a workaround, you can disable the OS file picker. Visit about:config, search for this setting and set it to false:
ui.allow_platform_file_picker -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1578900 Title: file chooser broken since last update To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1578900/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
