Why glitches/bugs in games only affect some copies instead of all of them if they all contain the same code

Question

Why glitches/bugs in games only affect some copies instead of all of them if they all contain the same code

In: Technology

Answer 1

Some glitches only happen if everything lines up Olin a specific order. Do move 1,2,3,4,5 works but if you do 1,2,3,5,4 it might crash.

The Konami code is up,up,down,down,left,right,left,right,B,A but a bug might be if you do something in the wrong order it might do something unintended.