Question Scale with screen size, but for UI Builder viewport

I would like to have responsive scaling of ui elements on all resolutions.
On UI toolkit Panel settings, you can set "Scale with screen size" (by default it is set to "Constant pixel size") just like in UGUI. But the problem is that UI Builder viewport doesn't match "Game view".

For example if i compare resolutions: 2700x2000 vs 270x200 it should be the same (if "Scale with screen size" is turned on). And in game view it is, but in UI Builder viewport it is not. "Label" element is not scaled proportionally. I have turned on "Match game view" on root (uxml) element.



On this image you can see that "Label" is not scaled with screen size, but red rectangle is. That is because red rectangle has size set in percentage, but if i set it as absolute pixel value it has same problem. If i set "Label" element to percentage value, it doesn't change anything.
EDIT: i found old forum post where somebody from unity wrote that percentage for font size doesn't work yet. He also suggested that everything should be in pixel sizes (except where you need to have percentages), and scale everything with "Scale with screen size" option. Just like i did. But...

It would be much easier to work if i could see final layout also in UI Builder viewport, so i can test different resolutions quickly.

Am i doing something wrong?

 

No it's not. Like i've said "Match Game View" is turned on. That doesn't help. UI Builder viewport and Game view does not match. You can see the image i have attached.