I think I found the reason Tixati cannot connect to SSL/TLS Trackers or RSS feeds that are hosted with Cloudflare, it seems to be because Tixati does not support the TLS Extension "Server Name Indication", Cloudflare require this due to hosting multiple TLS sites/certificates on one Port/IP.
When comparing uTorrent 2.2.1's and Tixati 2.16's TLS Hello packet you can see the difference, then I checked with Cloudflare and per their site they require SNI.
Cloudflare isn't the only one that would require this as more and more TLS sites are having to share the same IP's due to exhaustion.
Hope this can make it into the next version.