All UI Toolkit elements change size with every input. Why is this happening

Hello.
I’m using UI ToolKit and when I move the mouse on screen or press any keys from the keyboard, the whole document changes sizes. It looks like a bug but maybe I’m doing something wrong

my unity verstion 2021.3.2f1

Please help

Thank you very much

download this video to see how is acts: screen-capture.webm

Can you fill a bug please? we’ll take a look.