Splash Effect not appearing?

[Metrovania]

I've been encountering a weird effect (or lack thereof) in my level. The Splash effect when mario bobs around in water is non-existent. Although the texture was changed for this level, the missing graphic persists even without it on. Is there some weird quirk that I'm not aware of?

[Hoeloe]

The splash effect only appears around certain BGOs, not just water in general. If you're not using those BGOs, the effect won't display.

[Metrovania]

The splash effect only appears around certain BGOs, not just water in general. If you're not using those BGOs, the effect won't display.

Thanks a bunch!