I was trying to use the multi-row card to display several measures in my dashboard and it came to a point where I have to use it as a makeshift label. To my surprise, the multi-row card doesn't play nice with text values in measures.
This is the measure that I am trying to display in the multi-row card. Notice how the category label ("Revision (label)" seemingly disappear.
The [Reports Revised] measure is just a simple COUNTROWS measure, with a whole number format value. The category label displays properly in this case.
I then swapped it with a number-to-text converted [Error Rate] measure to test if it's working fine (I can use percentages just fine, but please note that I have to combine both measures in a format similar to the first screenshot). This time, the category label does not display properly.
Below is the multicard with several measures displayed. The first measure displayed is the text-value [Revision (label)] measure, the other is a number-value [Reports Reviewed] measure. Due note that in the Fields pane of the visual, the first item there is the [Reports Reviewed] measure and the [Revision (label)] is the last, but the [Revision (label)] measure shows up as the very first measure in the visual.
This behavior is very unusual and I would think that the visual should treat the values of whatever fields are fed into it uniformly, and that it should show them in the order that they were plugged into the visual.