Left mouse button act like Right mouse button

Hi,

i don’t know i get this problem and if it’s related to UE or windows
Usually left mouse button was wprking normally, but this time i started to work on a drag and drop feature with widget,
and i was thinking that i did something wrong in my BP, but no…
if i set “Detect Drag if pressed” to Left mouse button, i have to use right mouse button to drag.
i tested with right mouse button, i have to use right mouse button normally,
and i also tested middle button, and it works normally.

so i wonder why this bug comes suddenly especially here ?

I have the same problem.