Is that the same problem as this: http://share.dwarfland.com/YDNW (where pressing space after “not” should NOT extend the CC selection over the existing identifier)?
if so: bugs://70216: Fire: Fire: typing space at the end of CC lets soft selection expand around the next identifier
and fixed. the check for “am i invoking CC at the start of a token, or in the middle” didn’t take into account that the space you typed wasn’t there yet when it checked