Dear all,
I have a Custom field type of Single List box in my Issue which should not be mandatory.
Which means that when creating a issue, that list box selection is showing None if user does not change the value. Which is fine when user does not need to provide that field during Issue Creation

But our use case is that when the issue is created or updated and that field Solution/Editor is changed, we need to execute an automation rule

When using the Field value changed trigger, we are not able to trig the rule to detect the change from None to a list value.
What is the way to detect that initial change from None to a selected value of that list ?
Regards