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Found one definition

1.                 From The Free On-line Dictionary of Computing (19 January 2023):
                   
   
   
                   
                     
   rude
      [WPI] 1. Badly written or functionally poor, e.g. a program
      that is very difficult to use because of gratuitously poor
      design decisions.  Opposite: cuspy.
      2. Anything that manipulates a shared resource without regard
      for its other users in such a way as to cause a (non-fatal)
      problem.  Examples: programs that change tty modes without
      resetting them on exit, or windowing programs that keep
      forcing themselves to the top of the window stack.  Compare
      all-elbows.
      [Jargon File]
      (1994-10-27)