Small problem here after updating from DFFS package 2018-07-31. In DFFS backend the tabs don’t work – I just see fields for email config, no matter which tab is selected.
This seems to be caused by all DFFS packages after the 2018-07-31 release.
See screenshot for details and error in the console. This is in Internet Explorer 11, but in SharePoint 2010 which sets the document mode to IE8 standards.
When I manually change the document mode to Edge, the backend functionality returns to normal…for now I’m going to revert back to the 2018-07-31 package