Fairly recently Konsole was changed so that a new Konsole window does not show a single tab, it only shows tabs when there is more than one. I'm fine with this. However, I ran into a weird side-effect of this recently. I was clicking on one of my tabs (to open it) and accidently moved the mouse a little bit as I did this. As designed, the action of dragging a tab will detach the tab from the window into a new window. However, once the tab was detached in the new window, all I wanted to do was return it to the original Konsole window since it was an accident. Since the tabs don't show on a new window anymore, there was no way I could see to easily do this. I looked around in the menu a bit, tried dragging the window around and finally realized that I would have to open a new tab so that I could drag the accidentally detached tab back to my original Konsole window and then close the remaining newly-opened tab's window.

Maybe this is just a rare corner case where we have to accept that there is no easy way do what we want (return the detached tab easily and intuitively), but maybe there is a reasonable way to allow for this?