Mithian
Even if you wanted to attack back, you can't, unless i am also baby root PvP flag or, you are flag with the (non-exist) RP flag.
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2. Baby roots ( or arena ) flag: When you go there, the game itself tells you: " You are now in a Guild PvP Zone: Here, guilds can confront each other". And, when you leave: "You left the PvP Zone, You are still attackable for 120 seconds".
What mean:
- If both players are on the PvP zone: they can attack each other.
- If only one player was on the PvP Zone: Only this one get tagged for 120 seconds and is attackable by everyone who feel to.
That interaction between RP/Personal PVP flag and regional PVP flag, as described by Mithian above,definately seems like a bug. Roots and other zone tags should not allow another player without the same tag to attack.