Fixed bugreport:5913 recently-added state system no longer breaks on stacking status changes.
Fixed bugreport:5913 recently-added state system no longer breaks on stacking status changes.

git-svn-id: c1e39603916b71782cde5facdf0b79eff05c1414@16228 54d463be-8e91-2dee-dedb-b68131a5f0ec

Nipol/Siesta,Nipol/Siesta,Nipol/Siesta