7.4 - date format dd.mm.yyyy prevents saving dates

When you edit a date field and save, it's empty:

Title changed from date format dd.mm.yyyy prevents saving dates to 7.4 - date format dd.mm.yyyy prevents saving dates

mentioned in merge request !793 (closed)

mentioned in merge request !794 (closed)

mentioned in merge request !795 (closed)

mentioned in merge request !796 (closed)

mentioned in merge request !797 (closed)

mentioned in merge request !806 (merged)

mentioned in merge request !807 (merged)

Status changed to closed

Milestone changed to 7.4.0

Added bug label