anti-feature

noun2

1. •
   Intentionally-implemented functionality of a product or service (typically technology) which hinders or disadvantages the user, and whose removal may incur an additional charge.

   • The printer's anti-features made it hardly worth using: the small $40 ink cartridges get blacklisted after first use to prevent refilling.
2. •
   Functionality originally intended as a feature, but perceived as a bug, annoyance, or infringement of freedoms by some or even most users.

   • Apple's iBooks 1.1 has an important anti-feature. Full justification has been applied to all books by default on the iPad (but not the iPhone) and cannot be overridden by the book designer. — 2010