I'm thinking the cats eventually got to like the glass under their feet.
Cats have a hard time with slippery surfaces. I have 11 cats and last Oct I had laminate floors installed. At first they all had a hard time maneuvering. It was pretty funny. Most have gotten used to it by now but if they happen to make a quick turn or sudden movement they tend to slip and slide. Fortunately, this flooring is not prone to scratching.
I saw something similar once with a variety of animals, including a horse. I'll have to try to find it.
but cat #8 has the cutest paws of all of them!
It's always kind of fun to watch cats on slippery surfaces try to make a turn. At my place there is a natural circular runway (hall, kitchen, dining room, hall) some is carpeted, some is not. It was something like LeMans around here as a cat or two would 'corner' just like the big guys. Brakes were not, perhaps, as good.