Project: Paper2D

Hello ,
i have a question to ask.Is something programed in player movement component and way it does ground checks that prohibits capsule from leaving ground, if i apply velocity when gravity is zero?Let me try to further explain. If i set gravity to zero and launch character even by one pixel above floor then i can freely move him around Z Axis by adding directional velocity depending where my thumbstick is.But if he is touching floor nothing of above works .So there must be something in there that is blocking it from leaving ground.Any ideas?