I would think it to be some issue in how I set up the platform’s or the player’s colliders, but when I stand still on a platform and press “down” I don’t fall through it. When I get nudged from an enemy from below, or when I do a jump then it works.
I paused the game and made a screenshot. Also, putting the Inspector view of the platform into debug mode clearly shows that the script thinks I’m not on the platform…
The question would be which way to adjust the colliders to make it work more reliable. (Of course it could be made into a feature that dropping down can only be done on a jump, but I think that should be done intentionally and configurable… )