Comment 3 for bug 1613708

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.