It's a feature, not a bug.
There were disparities in population during ratification. This was a necessary compromise to address the concerns of the smaller states.
The system is working as intended.
It's a feature like an "install our app" popup on every random mobile site is a feature. Someone thought it was a good idea and did it intentionally, but I think it's awful and was done for bad reasons.
Moreso than in the Senate, but beyond that, not actually fairly by most reasonable standards. Monatana's Congressional district has a little under a million people, each of Rhode Islands two districts has a little over a half-million. So the division into states creates an almost 2:1 advantage in representation for Rhode Islanders compared to Montanans in the House.
Now, that's not as lopsided as the 66:1 advantage Wyomingans have over Californians when it comes to representation in the Senate, but its not exactly equal representation, either.