The most recent patch notes answered something I've been wondering about the "summon-from-anywhere" LFG system since I first heard about it: what happens if you get summoned into an instance and then you leave? The answer, apparently, is that you go not to the instance's entry portal, but instead you get sent right back out from whence you came. That's a bummer and a benefit -- unfortunately, you won't be able to use the feature to do any cross-world teleporting (leaving Violet Hold, for example, won't work as an extra hearthstone to Dalaran), but on the other hand, you won't have to stop what you're doing wherever you are.

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