Elevation graph line missing on android mobile app

For the past 1 month, I have not been able to view the elevation graph on the Android Connect app. I can only see the min / max elevation reading and strangely I can still tap on the empty space in the 'Elevation' view to get the specific elevation reading at a particular point in time and drag along for the duration of my run. There is no line. When I log in to Garmin connect online, I can see the full chart. I have a Venu 2 Sq and been able to replicate this across 2 separate pixel phones.