We are still in the support-time-range and have an urgent issue. the customer cannot edit custom fields of events anymore. in this case it is the checkboxes. the backend functionality seems to have changed in Joomla. in the matukio adiministration > Event list > Content a custom field: checkbox is loaded and the active checkbox is loaded as inactive. so, when the admin saves the event again the attribute is empty or not set.
we attached 2 screenshots to better understand the situation. Can you please provide a bugfix for this issue.