[Bug] 0006839: #comeFullyUpOnReload: not sent to MorphExtension's otherProperties (anIdentityDictionary)

When saving/loading playfields (Projects) it looks like  
IdentityDictionaries which are hold by MorphExtension's otherProperties  
are not rehashed on load,

- http://bugs.squeak.org/view.php?id=6839

which seems to describe a similiar situation as

- http://bugs.squeak.org/view.php?id=6721

/Klaus

P.S. workaround:

IdentityDictionary allInstances do: [:each | each rehash]
"don't #allInstancesDo: "