HTTP/HTTPS change on RT 3.8.2 when replying or commenting a ticket

Hello,

some days ago I updated our Request Tracker from 3.6.1 to 3.8.2. The
update was working smoothly and without problems. Good work!

However I have one single problem:

Our RT runs with its base URL as “https://”. That works perfectly with
every single link. But when clicking on replying or commenting a
ticket the next screen is trying to be loaded as “http://”. Can you
confirm - or which additional seeting must be setted that is reacts
correctly.

This problem didn’t exist with the 3.6.1.

Best regards,
Martin