Script Text Editor Duplicate Lines shortcut acts wrong when cursor is at the top

[kitbdev]

Godot version

4.2.beta

System information

Godot v4.2.beta (7f884b4) - Windows 10.0.22621 - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 2070 (NVIDIA; 31.0.15.3598) - Intel(R) Core(TM) i7-10750H CPU @ 2.60GHz (12 Threads)

Issue description

related: #66553

Selecting text from top to bottom works as expected, but selecting text from bottom to top instead duplicates the first line then the rest.

Steps to reproduce

Write at least 3 lines in text editor.
Select them from bottom to top, so that the blinking cursor is at the top.
Use duplicate lines shortcut (ctrl+alt+down/shift+alt+down).

Minimal reproduction project

n/a

[MartinVacheron]

Hi, just got into the same problem in Godot 4.3 dev 5.