Faulty entrance notification when visiting other guild from alliance

slicy

Hi, in our alliance we have a guild which is grayed out when traveling to strongholds.
When clicking on it, it says "you may enter only with invitation by guild members".
However, the guild doesn't prohibit entry, nor is entry blocked: when you hit 'X' again, you're in.
Nevertheless, the wrong clue misleads newbs asking "can you invite me?" or "why is it blocked?".