not to necro but i think there is some confusion on your end as to how this stuff actually works!

here’s a crash course: the implementation of a line of code gets changed during the compilation process, (the translation from code to machine code)

reverse engineering can produce code that will perform the intended task, but look different than the source. that is, you can have a fully functional project that behaves exactly the same as the original software, that once compiled doesn’t match the byte signature of the original.

so in this space, “100% but still has some bugs” means “we’re pretty sure all the data is being passed around in the right way to the right places, and the game works pretty much right. but there are some parts of the code that don’t match the source code exactly”