open a ticket :) and this is probably because because one arrived after the other. I do not remember the history on that part. Stef

just checked senders of #become: and found multiple places where it would be better to use #becomeForward:

CompiledMethod>>putSource:fromParseNode:inFile:withPreamble: MethodDictionary>>compact , grow, rehash , removeAll, removeKey:ifAbsent:

SmalltalkImage>>recreateSpecialObjectsArray

-- Best regards, Igor Stasenko AKA sig.