When I open a dashboard on mobile, in stacked mode (aka cards mode), it's to see the data right away via cards as a data visualization or number.
Scenario:
I usually enhance the design of my workbooks by adding text, logo, and images. It's helping to provide a better design.
Therefore, when I open the workbook on mobile, I start to see cards with the workbook name, then an icon, then a picture, then a text description, then another image and finally the data.
Solution:
I would recommend to Hide by default, all text and images objects in stacked mode to only keep insightful cards.
An option to unhide by default or by workbook could be added in case this is required.