Ground Skill Still Valid When Caster Change Map ( It shouldn't be)

In official server, all ground skills will be invalid when caster changing maps.
etc, AL_Warp will be disappear after the caster walk into his own warp.

It effects in GVG or PVP games,
The [i]Land Protector[/i] or [i]Ankle Snare[/i] will be still valid even when the caster was dead and forced to teleported to home.
But in official server, It should be invalid immediately when the caster changing the map.