Side-Scroller Character falling hard from Platform

Hi, i’m making a side scroller 2.5D and i’m using some cubes from unreal to make a sketch of the level and test some character movement mechanics, what i’m noticing is that when my character is falling from one of those cubes to the floor, it doesn’t fall, instead the character ignores the distance between the edge of the platform and the floor and just go like it was walking on a flat floor, it’s something about the platform colision or the character itself? thanks

I’m not sure I fully understand your question, can you provide a visual please?

I also have a few questions:

Are you using a 3D model as your character or a Paper2D character?