This used to be not an issue before, but now if you have a Non-trigger Collider (set to a Unity or Custom layer, excluding the Walkthrough layer since it already does what it is supposed to do but that's beside the point) that is set to exclude the Player/PlayerLocal layer, the player will still "collide" with it and be able to "walk" on top of the collider's surface while slowly descending as if they were using a flying avatar.

They'll still be able to go through the collider, but the problem here is that they can stand on top of the collider when they shouldn't be.