When setting "end_time" which is lets say 01:00 next day without setting an end_date you get the warning
"the end time cannot be earlier than the the start time." --> Correct.
If you check "open_end_time" the form gets reloaded and the "end_time" won't be visible any more and since the "end_time" has still the value "01:00" you get the same warning. --> Obscure
When setting "end_time" which is lets say 01:00 next day without setting an end_date you get the warning "the end time cannot be earlier than the the start time." --> Correct. If you check "open_end_time" the form gets reloaded and the "end_time" won't be visible any more and since the "end_time" has still the value "01:00" you get the same warning. --> Obscure