Can you describe your problem? Please tell me example of site with problem popup.
this is what i got when i clicked reply and i got the same thing for all other sites with popout window or i dont know what it call
Please tell me version of your Firefox and OS.
v 46.0.3 and the os is win 10
Maybe problem in other addons? Please try to disable other addons for test. Do you use Cyberfox browser?
Customer support service by UserEcho