Repeating events do not propagate custom data when user chooses apply "to every event in the series"
What happens now
If you create a custom dataset on Events, then create an event and populate that dataset, then create some repeating events from it:
custom data from the original event is not present in the repeats.(this seems to have been fixed recently?)
editing the custom data on the original, then choosing "change applies to every event in the series" from the pop-up that appears after clicking Save, gives a success message but the custom data is only saved for the current event.
What I think should happen
✔Custom data should be copied to repeat events on creation.
Custom data should be copied to repeat events when the user says so.
Changing the number of events does seem to trigger the data to propagate again.