FWIW As previously mentioned, we've (luckily) never had the core licensing issue that many others have. That might
be because; We've never bothered with the XC5 free licence release scenario and / or we carry out everything (mods / own changes / customisation etc) on our server, not locally. Its hard to be absolutely sure with XC5...
In terms of the latest XC5 update, we didn't see XC 184.108.40.206 at Merchant Wave, it progressed from XC 220.127.116.11 straight to XC 18.104.22.168. No problems (for us) for a change(!) with this XC5 upgrade, but worth noting for this specific thread, that there's changes to the files shown below, which might