There's tons of things like that in immigration, unfortunately.
As an example, K-3 visas still can be filed, but in practice, do not get issued (maybe 2 a year?)
Or, many people entered the US on parole, and were considered legal few years back, but now perceived illegal...
Or, some people out of status getting put in removal in San Diego though they filed I-130 and I-485, are in authorized stay period and technically, overstay should be forgiven...
Or MyProgress says 3 months until decision for somebody and it takes 12 months...