misfeature

plural misfeatures

1. An undesirable or incorrect feature.

   He hath his Winter too of pale Misfeature, / Or else he would forego his mortal nature.

   1818, John Keats, The Human Seasons

   2 more examples

   This may not appear to be a critical misfeature, and in fact I have on occasion come to rely upon this unintentional archive of data to recover the data[…]

   2003, John Ray, Maximum Mac OS X Security

   Most recent research on modern open source codebases indicate that array covariance is extremely rarely used and is almost certainly a language misfeature.

   2014, Benjamin J. Evans, David Flanagan, Java in a Nutshell, O'Reilly, →ISBN, page 149