Get Mouse Delta in Widget

Hi,

I have a menu with 3d model inside which can be rotated (it’s being displayed by render target). This is already working thanks to Get Mouse Delta in Widget/
But the problem is to get that working in Widgets, I must keep enabled default Input Mode. I can register mouse movement, but I can also move my character when my widget is open - I don’t want this.
Before I made this thing, I used UI Onlu Input mode when opening my menu - this is stopping my character from receiving any input. I can only navigate on widget.
So my questions is - how to have Get Mouse Delta working with UI Only Input mode
or
Stop Pawn from receiving input in default Input Mode, when my widget is open?