it's really a misfeature according to the jargon file (4.0.0)
definition:

":misfeature: /mis-fee'chr/ or /mis'fee`chr/ /n./  A feature
   that eventually causes lossage, possibly because it is not adequate
   for a new situation that has evolved.  Since it results from a
   deliberate and properly implemented feature, a misfeature is not a
   bug."