Walkable water ripples not displaying correctly

Sometime within the last two EE patches, I’ve discovered that when I walk across a stream, the nice water ripples are gone. In their place are these white squares. This doesn’t happen in the diamond edition in the same mod, with the same haks. Can someone point to a way to resolve this?

I’ve posted this on the Beamdog support forums, but with no replies after a couple of weeks, I thought to try here.

Here’s a screenshot.