Firefox opens 2nd window instead of using the open one
I have Firefox open. When I click on a link in Thunderbird instead of opening the page in the open Firefox window, it opens a second Firefox window? This just started hap… (read more)
I have Firefox open. When I click on a link in Thunderbird instead of opening the page in the open Firefox window, it opens a second Firefox window? This just started happening and I don't know what I might have done to cause it. Using Windows 8.1.