On a closer look I don't see any big issue here. I happened to choose the only filetype as a test/example that *I've found* to be an issue - .mp4 When one uses ..Details > Default, ect on video there are these 2 lines concerning .mp4 created - video/mp4= video/mp4v-es=
So when both lines exist with a = of player A then nautilus > properties > open with doesn't work properly on a .mp4 when trying to set one or the other to player B as default mimeapps.list will reflect the change but nautilus will not until the other line is either removed or edited to match ( most users will only have video/mp4 files.. So I guess this is a valid bug, albeit small, if would be good to know if there are any other 'conflicts' in video or audio mimes before considering an upstream bug. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to nautilus in Ubuntu. https://bugs.launchpad.net/bugs/1280794 Title: Can't change default "Open with" application To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nautilus/+bug/1280794/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs