Hi @Anonymous,
Can you share a bit more about your issue ?
Do you change the configuration of some columns in sharepoint list?
Do you mean that the value of one field doesn’t display in the item of sharepoint list ?
Have you tried to refresh the connection to the data source ?
First issue:
I have made a test. There’s no issue on my side.


Please try to remove the connection for the app and re-connect to data source.
Please try to turn off “ Delayed load”feature in App settings.
If the issue is still existed ,please try to re-create an new app from the SharePoint list and check if it is solved.
Second issue:
I assume that ‘Created’ column is date type.

Set Items property of the gallery to:
SortByColumns(test2,"Created",Descending)
Regards,
Eason