Most drag and drop functionality does not work

[verdog]

Godot version: 4.0 (commit abf5132)
OS/device including version: Manjaro Linux/RTX 2060
Issue description:
Functionality via dragging and dropping doesn't work. It almost looks as if it doesn't notice me releasing the mouse button. In the gif below, you can see that after I try to drag an image to the texture of a sprite and put my mouse back into the resources window, the window still scrolls with my mouse as if I was holding down the left mouse button.
Steps to reproduce:

[EricEzaM]

I have not experienced it impact my drag and drop capabilities, but I have experienced the window still scrolling with my cursor when I have moved away from it.

[HaSa1002]

This issue seems to be specific to the linux display server.

[akien-mga]

Confirmed on KDE Plasma with KWin/X11.

[Anutrix]

I have not experienced it impact my drag and drop capabilities, but I have experienced the window still scrolling with my cursor when I have moved away from it.

Same for me on Windows.

the window still scrolls with my mouse as if I was holding down the left mouse button.

This is the behaviour I am experiencing but couldn't find drag and drop issues.

[pouleyKetchoupp]

I can confirm dragging & dropping an image file into a texture property doesn't work on Windows either (it keeps the "disabled" icon as if it was a forbidden action).

[reduz]

Drag and Drop works fine for me on Windows, I wonder why is it different for you guys.
I did a small PR to improve this on X11 but it still fails for DND across multiple windows