Apologies if this is in the wrong place, I did not see a bug report section as detailed in the initial post text.
PhantomBot Version: 2.4.2 (Revision 5c75a7b2)
OS Version: Ubuntu Linux 18.04
Java Version: 1.8.0_181-8u181-b13-1ubuntu0.18.04.1-b13
Browser and Version (for Panel Support): Google Chrome 70.0.3538.102 (Official Build) (64-bit)
Stock PhantomBot: Yes
Let us know what help you need:
When loading the landing page (with the buttons for the panel/ytplayer/playlist viewer) over HTTPS, clicking on the links for the youtube player, the playlist viewer, or the panel redirect to port 80 instead of port 443. Linked below are two screenshots showing the page loading and the valid certificate once inside the site.
Redirects to 80: