I changed over to httpS a couple of days ago - that's actually an upgrade, kind of, and i didn't notice any issues
Hope that helps!
(there was another issue before that when the web hist upgraded PHP to a new version that this software doesn't support - that was on Tuesday morning, and i did notice some glitches - the popup dialogues for doing images etc didnt work properly, so I have rolled us back to a slightly older PHP and those glitches were fixed...)
Use the https version, version, and tell me if there are still any issues,
apart from that keep the general sick behaviours in every sense of the word