I've been trying and can't seem to reproduce any such bug with the latest Unity8 and the latest Xmir in yakkety. Everything is clickable in LibreOffer and Firefox.
It's possible your vivid image is missing the most recent Xmir fix that was bug 1590553 (like what you describe). It's also possible matchbox-wm is misplacing windows as looks like the case in your video (the dialog should not appear on the right hand side). It also seems that matchbox-wm will ignore mouse input in the non-focused window without making it obvious which one that is. So try clicking around to see what is responding. Sorry, I also don't have an M10 to test with. But I can at least say that I can't reproduce this with the latest Xmir. ** Changed in: xorg-server (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1613708 Title: Some Xapps buttons are not responding Status in xorg-server package in Ubuntu: Incomplete Bug description: Enviroment: current build number: 169 device name: frieza channel: ubuntu-touch/rc-proposed/bq-aquaris-pd.en last update: 2016-08-16 10:23:29 version version: 169 version ubuntu: 20160816 version device: 20160809.0 version custom: 20160805--42-20-vivid Product: BQ M10 FHD Steps to reproduce: 1º Open LibreOffice and try to print something 2º Print settings window appear, try to click on Accept/Cancel/Exit etc 3º Buttons on LibreOffice won't respond 1º Open Firefox 2º Mouse-over on search,downloads,bookmarks etc 3º Seems like mouse-over is not focused and is clicking is not responding Current result: Some Xapps buttons are not responding(tested on Firefox and LibreOffice Writer) Expected result: Add info: This is using xmir from https://launchpad.net/~ci-train-ppa- service/+archive/ubuntu/landing-053/+packages. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1613708/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp