I recently ran into a mild annoyance when dealing with the FloorMaterial property and how it displays in the Properties window.
When Humanoids are in the air, the property box is set to an empty space. Following standard behavior of all other properties in Studio, this implies that the property is nil (or an empty string), which is not correct.
This was causing confusion for a few minutes (until I printed the property), and I think it would be a very nice QoL update to make this display “Air” instead of an empty space, since Enums cannot be nil. This way, the property display is more cohesive to what’s actually going on. While this behavior is documented, it wasn’t immediately evident to me.