Disproportionate custom cursor movement

Hi! I use Unreal Engine 4.18.1. Sorry, my English is bad. I used Google Translate.

I want to add custom cursor in my game. I tried to make it.
I created user widget and added arrow image.

Then I actived check mark “Show Mouse Cursor” in my controller.

And I chose widget in Edit > Project Settings… > User Inteface.

I had bad result.
My arrow moves disproportionately.

What did I make wrong?

I have the solution. It don’t work in in editor viewport. But it worked in the Standalone game mode.
Good Luck!