just noticed a problem with the delayed load preview feature which cost me hours of my time today.
I have a form which submits data to a sharepoint list, nothing special here - connection,data source and permissions are set correctly - in the powerapps "studio" everything is working well. However, if I load the app using the URL, the forms won't load displaying an "No data source provided" error.
After deactivating the preview feature everything works well again.
thanks for your reply - I tried it with following Browsers:
Edge/Firefox/Chrome/Vivaldi; 3rd party cookies are allowed as well.
Defaultmode is set to mode: Formmode.New
Before deactivating the feature I also tried to recreate the form on a new screen, even a new app and it didn't work as well. Also I have some navigation elements placed on the screen which also didn't work (Navigate(xxxx)).