Here's a bugreport: I use the lastest version 0.371 and when you want to set in the Web interface for example Preferences > Queueing > Queue Settings > Maximum number of Active Torrents and click Apply my URL got changed from: https://examplesite.com:444/gui/ into https://examplesite.com:8080/gui/ resulting in a "Unable to Connect". When I change the URL back to the correct one (https://examplesite.com:444/gui/) it works.