All firefox click pop-ups dont have close button. I have to click the launcher icon to show both the windows, only from there i can close it.
Is there any fix. I have disable pop-ups on default.
Is this related to the question I asked at How to adjust window placement in Unity, Ubuntu 14.04 based on overlapping top bar ?
I have not gotten an answer yet. If this is a common problem (which it seems to be) eventually there will be an answer. Until then, the only workaround is to hold Left Alt and then click and drag the window down. This will let you access the bar.