I hope this bug is not a dust collector. The dynamic paint and fluid sim/ocean modifier goes hand in hand when creating fluid stuff, so I would be really happy if someone could take the task and fix this.

Forgot to mention that there is something strange going on on frame 99 (only) with the wetmap/paintmap where it creates a meshy pattern on the fluid.

Here is the .blend. The fluid simulation needs to be baked.
You also need to press add on the dynamic paint output every time you open the file in order to make the wetmap paint appear.