Hello,
I have a two monitor setup. I have been using DF in windows seven for several years now and I cannot remember ever having this partyicular issue: I recently downloaded DF to a new Windows ten system. When I drag a tab from the Firefox tabs bar from monitor one and try to drop it and open it on monitor two the tab/page opens for a split second on monitor two and then jumps back to monitor one in a new window. I then have to click the "Move Windows to Next Monitor: button at the top of monitor one to get the page to move to monitor two. Is there a fix for this? Thank you.

That did the trick. Thank you kindly for your time and effort.

Removed by OP.