If you customize a SharePoint list with PowerApps and publish it, then if you decide to rename your list, updating/removing/re-inserting the datasource in your form through the PowerApps Studio will not update correctly the application. Indeed, the following error persists in the error checker:
Here is the detail of this error when clicking on it:
FYI, the error lies in the 1.json file where the
PowerApps team: you might want to fix this little issue... 😊
IMPORTANT NOTE - Nevertheless, if you ignore that error and publish your form anyway, it'll still work (just tested it on a very simple form).