This is more or less a bug report, I think, or at the very least a suggestion on how to improve user experience... Opera really wants you to drop the tab at the exact pixel it feels like it's the best, and that's insanely frustrating.
- It's not possible to drop a tab at the end of the tab list for some reason
- When dropping on the tab bar, but not on top of other tabs, it will not be dropped on that window. Instead, it will stay as a separate window (it should become the last tab instead)
- When dropping the tab outside the window to create a new window, it should spot the location where it was dropped and create the window there and not on the same position of the original window