MudSelect Display Text different behavior when property to bind values is empty vs not

I have a MudSelect with MultiSelection enbabled. I also have a MultiSelectionTextFunc since my SelectItems have a Value and a Text. I bind the Value to the property Values of my Model. Here is a code snippet:

https://try.mudblazor.com/snippet/mOwyaqmnmhvriTTJ

The above works fine, and displays the values as I intended.

The problem is when I already have some values in my Values property. Then, although it binds the correct Values, it displays only the first one:

https://try.mudblazor.com/snippet/QYcSkqmRwrdnRwmz