Hello, good to see forums still here after 10+ years :D
Really strange one - usually I do stuff like water by having a tiled bg that selectively changes things like a platforms vector y / gravity etc.
I have a really odd one though, I have animations set when overlapping, and set to a fixed speed ( explicitly stated in code ) and calculated based on platform speed, and no dice.
I've tried loading animations again, changing name of sequence etc. Still doesn't play. I've checked through for any other conditions that might conflict etc. Very odd. :p
Develop games in your browser. Powerful, performant & highly capable.