I'm using a Toshiba laptop, 64-bit, running Windows 10 Home, 8gb memory. Firefox version 45.0.1. I am having three issues but I think they are all related, otherwise I would open separate problem tickets. If I need to open separate tickets, please let me know. I no longer have the ability to drag tabs to different locations on the Tab Bar. I noticed it happening only within the last few days. I wanted to download some videos from the internet and wanted to download them by size. I have a very slow connection and only download about 3 things at a time. I had 8 tabs open and wanted to move them so they were in order by size. And that ability is gone. Along the same line, I used to be able to drag a tab and create a duplicate of it. That ability is also gone. And the final problem is this. I used to be able to click on links, one after the other while holding down the Ctl key, and they would all open in separate Tabs. Now when I click on multiple links, Firefox only brings back the last link I click on. I have Colorful Tabs add-on installed but it was installed a year or so ago, so I don't think that would be it. I also have Theme Font and Size Changer add-on installed but have had it for quite a while too. I noticed that both have been updated during March but I would hope that would not cause these problems. Any help with this would be greatly appreciated.