In a Label component that does not have the keyboard focus, press the mouse button, drag, and release.
The Label should go into edit mode on the transition to button down, with the drag and release operations ignored.
No, I don’t agree. If you want that to happen, you should use a TextEditor.
A label is there for things that you don’t want to be easily changed by accident, but where you might want to double-click it to change it.
Hmm…I can see how that could be a good feature. But labels go into edit mode on a single click, not double click.