Default persistence strategy is not applied if a group configuration is defined

[obones]

@rlkoshak

I think this is worthy of an issue. There should be a way in the UI to define a strategy for all items.

Done: Unable to create a persistence configuration for all items · Issue #2516 · openhab/openhab-webui · GitHub

@rlkoshak

The fact that defining a strategy disables the default is expected

Well, it was definitely not clear enough in the documentation and it took me 3 days to notice that I was missing all my persisted state.
In particular when the documentation only mentions configuration files and totally ignores the MainUI dialogs that serve a similar purpose.