Hi Rafael,
Thanks for contacting Syncfusion support,
Based on your provided details we have checked the reported issue “Items are not shown in grouped column” and we are unable to reproduce the issue in our end. We have attached the tested sample for your reference.
SfDataGrid version : 17.4.0.39
Xamarin Forms version : 3.6.0.344457
Screenshot for your reference :
Please let us know the following details
* SfDataGrid version
* Xamarin Forms Version
* Which platform you are facing the issue?
* SfDataGrid settings
* What type of collection you added to SfDataGrid
* How you add collection to SfDataGrid
Regards,
Karthik Raja