Advancing past level 18

Any consequences from doing this? Like losing out on stats, HP/MP, skill points, etc?

I searched for some answers, but only came up with info from early 2010.

Yeah, the losses still applied until right up to before Rebirth patch. I'm not sure if Rebirth makes it so that advancing past level 20 still puts a small loss on your stats, but since level 20 is so easy to acquire I'm going to try that out with two characters unless someone has already confirmed tat there's a loss or not.

Aight, thanks.