Of course we were hoping we wouldn't have any problems with this build, but that rarely happens. Still, we were hoping. We went out today to show Chelle the place, and noticed some cracks in the foundation. On closer inspection, we saw that they were the result of the rebar being too close to the top. Some of the rebar is even visible.
The fix is that they will cut out that area, drill into the sides of the slab for the new rebar, and then pour it again. Luckily, this is in the garage area so it won't affect the look of the stained concrete floor in the living areas.