Drag-and-drop Problems

For example, 3 lines:
[Text A]
[Text B]
[Text C]

Click the left-edge space to select the whole line of [Text A]. (The ending CRLF included.)
Drag-and-drop the selection to the end of [Text B].
The selection will wrongly expand to include [Text B].

Click the left-edge space to select the whole line of [Text A]. (The ending CRLF included.)
Ctrl + drag-and-drop the selection to the end of [Text B] to duplicate it.
Drag-and-drop the selection to the end of [Text C].
The selection will wrongly expand to include [Text C].

———-
Split the window.
Select some text in the 1st pane.
Ctrl + drag-and-drop the selection to the 2nd pane to duplicate it.
The selection is in the 2nd pane now. But the focus (the input point) is still in the 1st pane. This will cause some problems, e.g.:

1. Ctrl + Z at this moment will scroll the 1st pane to the position same as the 2nd pane.

2. Click within the selection in the 2nd pane, the input point in the 1st pane will disappear. But you’ll see a “virtual” input point in the 2nd pane. And if you think that’s the real input point and go on to strike keys to input something, all the inputs will go to the 1st pane.