I'm using Windows 8 and appreciate the ability to reorder my programs at will in the taskbar. However, for different windows of the same program – I have three Firefox windows, for instance – I can't seem to reorder them; what's worse, they seem to regularly switch themselves around for no reason I can see.
I usually want my main Firefox window to be the first (leftmost) one in the taskbar, with my work window second and the third window last, but every now and then they get mixed up and I have to get used to remembering which is which all over again, and I can't figure out how to manually fix them. I think this happens with programs other than Firefox too, but I suppose I could be misremembering.
Is there any way to reorder the taskbar buttons corresponding to multiple windows of the same program manually?
Why does the order of my Firefox windows keep shifting around? Is there a way to ensure it keeps the order straight?