I have released a new version of the modern DFFS that fixes the issues where the form sometimes defaulted back to the standard SharePoint form.

From version 1.1.x DFFS is redesigned to use the Form Customizer Extension instead of only using the List View Command Set Extension.

This means it is more stable because this is the official way to create a form customization. Unfortunately, it means that opening the form in a side-panel in the list view is no longer possible. The functionality for opening the form in a side-panel still works when you work with child items (using the vLookup functionality).

Being able to open the form in a side panel was the reason for creating it as a List View Command Set Extension in the first place, but hopefully Microsoft will add support for creating custom forms in a side-panel or dialog box in the future.

Please note that this update requires some manual changes to all the forms configured with the Modern DFFS. You must enter the configurations for one of the forms in your list and use the new Install DFFS tab to register DFFS as the default form for the list. See more information in the user manual her: https://spjsworks.com/usermanual/

Read the change log here: https://spjsworks.com/changelog/

Let me know if you have any questions by either email or by posting in the forum: https://spjsblog.com/forums/forum/modern-dffs/

Alexander