http://i.imgur.com/gKLX5ZY.png

On Windows 7 clicking the tab bar, would undo the last closed tab, I have it set up to do this also, but instead of undoing the tab it moves my Firefox to the other window.

Press the Control, Shift and T keys to open the last closed tab.

I would rather have the old functionality back, it's a regression in the way DF handles window boarders.

I also want to note that in both Windows 7 and 10, v7.3.4 it works correctly, and in both Windows 7 and 10 using Beta7 and now Beta8, it breaks tab bar functionality. A regression indeed.

I'm bumping this just so this issue doesn't get missed. Somewhere between v7.3.4 and the latest Beta, a change was made that makes DF think the tab bar in Firefox is now part of the windows caption bar, and because I use that setting for middle clicks to move my window, it's now cockblocking tabs since I use middle click for those as well.

Stop being cockblocks you DF Devs!

I'm not saying Beta 7 is where the cause started, basically this is my history.

Windows 7 using 7.3.4, everything works great.

Then I upgraded to Windows 10 on a new SSD, went straight to Beta7, This is where I noticed the problem.

Went back to my Windows 7 SSD, to test, I updated 7.3.4 to Beta 8, I also noticed the Firefox problem, going back to 7.3.4 made the problem go away again.

This has been fixed in Beta 9, Thanks!

One small thing I noticed though was, if Firefox is in fullscreen, there is a small delay when middle clicking to move the window, it's instant if Firefox in windowed though.

But I'm just glad the tab bar works again.