Hi @Anonymous,
How do you submit your form data into your SP list using Patch function? Could you please share a bit more about the formula?
I have made a test on my side, please take a try with the following workaround:

Set the OnSelect property of the "Submit" button to following formula:
If(
EditForm1.Mode=FormMode.New,
Patch('20181026_case11',Defaults('20181026_case11'),EditForm1.Updates), /* <-- '20181026_case11' represents the SP list data source in my app*/
Patch('20181026_case11',BrowseGallery1.Selected,EditForm1.Updates)
)
Note: The EditForm1 represents the Edit form within my app. And within the first screen of my app, I use a Gallery control (called BrowseGallery1) to list all records of my SP list datasource.
On your side, you should type the following formula:
If(
EditForm1.Mode=FormMode.New, /* <-- EditForm1 represents the Edit form control within your app */
Patch( /* <-- Add a new record */
'YourSPList',
Defaults('YourSPList'),
EditForm1.Updates
),
Patch( /* <-- Modify an existing record */
'YourSPList',
'Type Item property formula of your Edit form', /* If you don't use a Gallery to list all your SP list records, you should type the Item property formula of the Edit form*/
EditForm1.Updates
)
)
Or
If(
EditForm1.Mode=FormMode.New, /* <-- EditForm1 represents the Edit form control within your app */
Patch( /* <-- Add a new record */
'YourSPList',
Defaults('YourSPList'),
{
Column1: DataCardValue1.Text,
Column2: DataCardValue2.Text,
...
}
),
Patch( /* <-- Modify an existing record */
'YourSPList',
'Type Item property formula of your Edit form', /* If you don't use a Gallery to list all your SP list records, you should type the Item property formula of the Edit form*/
{
Column1: DataCardValue1.Text,
Column2: DataCardValue2.Text,
...
}
)
)
Note: 'The Item property formula of your Edit form' represents the existing record you want to modify within your Edit form. You could also find the corresponding record you want to modify using LookUp function based some conditions.
More details about the Patch function, please check the following article:
Patch function
When you use the Patch function to modify an existing record, you must find the record firstly, then put it on the second parameter value of the Patch function (as mentioned above).
Best regards,
Kris