You have an idea how much time could this bug happen?

Unfortunately, it happens on every shape I've tried. It's 100% of the time, as far as I can tell.

Before, I got perfect shapes every time.

Now, all the vectors have either a slightly corrupt, or very wavey and corrupt result after applying the offset.

It's almost as if the algorithm is trying to apply a smooth effect or something.

The result should be the same as applying a very thick line to the shape, then converting stroke to path, and deleting the interior of the stroke. This effect must be perfect. It should not have to guess or estimate anything, and should be pristinely uniform.

Whatever was done to the calculation of the offset needs to be reverted back to the way it was.

Thanks again for your help, Jabier.

-C