Since the weekend the dark theme on dashboards changes the text colour of measure to a dark grey, not white, so its almost impossible to see it.
This card has the value 49,128 but because of the font colour, you really have to look hard
Im still getting this in the Android and iPhone app
Please if there is any issue wen viewing the same dashboard in Power BI service. Also please update Power BI mobile app to the latest version.
If there is no issue in Power BI service, I would suggest you report the issue by creating a new thread in this forum.
Best Regards,Qiuyun Yu