How to resize Blui browser widget in ue4?

Hi,
Please provide me with some help i’m using Blui browser plugin for ue4
link : https://github.com/getnamo/BLUI/
my problem is that when ever i resized the blui canvas the mouse postion not working correctly

more info : i don’t won’t to put the widget in full screen but i want to set it to specific position.

Thank you.