Resolved UI Toolkit in Portrait Mode - Size Issue

I am currently playing around with the UI Toolkit in Unity Version 2021.3.10f1, where I wanted to try out how it would work to make a UI for a mobile game.

And I encountered a problem with the sizing of the elements when it comes to portrait mode, specifically with elements where the size is controlled by pixel-size. Normally, the UI in the UI Builder and the Game View look exactly the same, as can be seen in these two images:



However, when I change the aspect ratio to Portrait Mode, the sizing in the Gameview becomes weird and the elements that have pixel values for their size become significantly smaller:



I have enabled "Match Game View", so the Canvas Size should be the same.

Does someone possibly know why it does that and what I could do to prevent that?

 

Ah, thank you! That was totally the problem. I changed the Reference Resolution for the Scale Mode and now it works just fine!