Comment 29 for bug 1625846

Ah, OK. We've been arguing with different assumptions.

Symptom: Firefox's menus don't work
Bug: XMir's focus behaviour differs from a spec-compliant X11 window manager.

One solution here, which is what I've been suggesting, is to implement spec-compliant focus behaviour in XMir.

But you're correct that simply making the popups non-focusable Mir surfaces will make XMir behave more like a spec-compliant X11 window manager, should make it behave *enough* like a spec-compliant WM to resolve the symptom and may well be simpler to implement. This could be an expedient solution for the short term.