I am having an issue with how popups are treated in the Mobile View vs the Desktop view in Dashboards.
In Desktop view, if you choose a dark theme the popup font color changes to a light contrasting color, but in Mobile view the font colour doesn't change. This makes even esri's pre-made themes unusable in mobile view when you have a map. I will mention that all of the font colours in the custom theme builder don't effect the popup text colour.
Desktop:

Mobile:
