I have some required custom fields which are supposed to pop-up only when the issue type is a "Feature" or "Improvement".

The fields get populated correctly when I am creating the issue, However the same does not happen when I am editing the issue.

For example:
I have an issue of type BUG and I try to edit the issue and make it of type "Feature", the required fields do not appear when I change it to Feature.
But when I close and edit the issue again the fields are there.