anti-feature

Noun

 * 1) Intentionally-implemented functionality of a product or service (typically technology) which hinders or disadvantages the user, and which the seller may charge users to not include.
 * 2)  Functionality originally intended as a feature, but perceived as a bug, annoyance, or infringement of freedoms by some or even most users.
 * 1)  Functionality originally intended as a feature, but perceived as a bug, annoyance, or infringement of freedoms by some or even most users.