Hi Max,
since the Update to v8.0.40 today, it is not possible anymore to place a checkbox that is not checked by default.
To test it: Just place a checkbox, set Value to 1 and it will be checked by default. It doesn't change when I enable or disable the Checked-Behaviour.
Before the update the form worked well. I have the checked behaviour active and placed there a {var:read_data2.active} - if the database value has a content, the checkbox should be checked, if not, the checkbox should be empty.
Can you please tell me how to fix this?