I have discovered that the issue affecting the aforementioned app is in fact unrelated to Google Maps/ Geolocation. I have managed to resolve it so apologies for jumping the gun and pointing the finger at Xiaomi use of Google Maps/ Geolocation.
Hi,
I have recently acquired a Xiaomi Redmi Note 7 and I have noticed that an app that uses geolocation and Google maps does not work (ie as soon as I click on a button to display the phone location on the google map, the app freezes) whereas the same app downloaded to other phones works fine...