Looks like the code is invoking the toggle when varbit 6719 goes from 0 to 2, however, the game for some reason sets this varbit to 2 when entering Puro Puro, and does not set the varbit back to 0 until the player leaves, thus toggling the HUD until the player leaves (or manually toggles the HUD back on with the shortcut).
Looks like the code is invoking the toggle when varbit 6719 goes from 0 to 2, however, the game for some reason sets this varbit to 2 when entering Puro Puro, and does not set the varbit back to 0 until the player leaves, thus toggling the HUD until the player leaves (or manually toggles the HUD back on with the shortcut).