Optional Field issue

Hi.. Just noticed you had checked this.. I was ‘playing’ around with the form earlier today to see if I could fix it but it created another inconsistency.. I’ve just deleted then re-entered the two time fields into the form and set start time as required input (you can see the red *). If you now press the send button without entering any data you can see that all the required fields EXCEPT Start time are highlighted as required. This is the reverse of the original problem which was the end time was set as optional but input was required?
Strange problem.. Any ideas? Thanks!

Hi Thanks again for your swift response.. I’ve copied/pasted from the Start Time Field Settings below. Highlighted are the only options I’ve set…I’ve not pre-populated the field (I don’t really understand how that’s set anyway)

Require
Force users to fill out this field, otherwise it will be optional.
Optional
Required
Error message
Please Enter a start time
Increments
Choose what time increments you want to use for the hour and minute timepickers.
Hour
1
Minute
15
Limits
Choose a time limit for the time picker field to restrict the time selection between specific hours.
Specific Hours
None
Default time
Use this feature to specify a default selected time.
Default
None
Pre-populate
You can pre-populate this field dynamically using the query parameter passed in your form URL. Enter the query parameter key to fetch its value from your form URL below.
Query parameter (optional)
E.g. query_parameter_key
Note: The query parameter’s value passed in URL should match with the selected time format.