[MIT: from the Schroedinger's Cat thought-experiment in quantum
physics] A design or implementation bug in a program that doesn't
manifest until someone reading source or using the program in an
unusual way notices that it never should have worked, at which point
the program promptly stops working for everybody until fixed. Though
(like {bit rot}) this sounds impossible, it happens; some programs
have harbored latent schroedinbugs for years. Compare {heisenbug},
{Bohr bug}, {mandelbug}.
[glossary]
[Reference(s) to this entry by made by: {Bohr bug}{heisenbug}{mandelbug}]