I’m pretty sure many of you already had this issue, your groups 4/5 and some random guy joins and merges two groups resulting in your instance getting destroyed. So my question is, what the hell is this and why is it even there? Basically 1 guy can join any group and kick them out. This thing needs to get fixed …..
Using the LFG tool to find more members for your party will not cause you to be booted from your instance, unless you choose to merge with another party. If you or a member of your party do, your party leaves the current one and joins the selected. If another party merges into yours, though, the instance is intact. This is because of the way dungeon instances are tied to parties, and the concept of instance ownership. Note that there is no such concept as party ownership, or leadership.
There is no leadership of the party, it is an ownership of the instance. Instance ownership is not tied to the party; you are effectively guesting into someone else’s instance, which is only allowed to members of the party. When the owner leaves the party, the instance is closed.
I’m just clarifying the way that it works. We are definitely listening to your feedback on how you would like things to work. 
I can’t talk about what changes are or are not happening in the future regarding party rules, but discussing how you want things to work is always valuable.
If you are in a full party and go into LFG, you won’t see any parties to merge into, Anicetus. If you are seeing situations where this is happening, it’s a bug (that I haven’t seen before), and it should be reported. The party list should only be populated with parties which your group could successfully merge into (the total number of players after merge is <= 5).
However, if you’re in a 4/5 party, and click merge on a single player, then you are forcing everyone in your party to join that lone player’s party. I believe this is probably where the confusion lies.
Ouch. Thanks for the find, I’ll look into it.
