Hi guys, just putting this out there and seeing if anyone else is seeing the same issues we are.
Now that the fancy, new editable PowerApps Grid Control is out of preview and generally available, and we've had a use case on a new feature for it (custom entity for invoices and related line items) we've gone ahead and included it in our software release. Went through testing, all passed and happy days.
Fast forward to now, a client calls up and the nested subgrid is showing up as blank for every record. If you open the invoice record you can still see the related line items associated with it but they aren't showing up in the nested grid.
We've tried changing the configuration, removing the control from the entity and re-adding it and it just seems that the nested grid functionality is completely borked. Is anyone else seeing this?