A behavior I observed during testing; when a hero is located on a square with a script with Trigger(HERO_MOVE, "X,X", "xxxxxxxxxx") and he initiates a meeting with another hero, it triggers the script.
Load: "a 0 9995 9400 meeting problem 01.GX1".
Maximus initiates the meeting with Sir Gallant, it triggers the script before opening the Meeting window.