It does not appear to be a Firefox issue but maybe a Linux issue. Same thing happens with Chrome on Linux, the main panel containing numerous changing screen appears to lock out some functions including the icon that allows the login panel to present itself. This happens most of the time. An animated icon that indicates something is loading appears at the top middle of the panel and never stops. This morning the display panels are different but the issue remains. My expectation is that I should be able to select the login icon and go directly to the username/password panel at any time, but this does not happen.
