Render problem with water material (2 Sky Objects)

[Heindreas]

In Sept. 2022 i rendered out a scene with a schematic visualisation of rain on a terrace floor (SUPRO_SC03_Rendering_09-2022.mov).
Now i have to show a simular scene, but when the raindrops appear, the wooden textures get darker! (LIGO_SC03.mov)
The render settings are the same in both files.
I made a new rendering from the first file (SUPRO) and now this render problem happens also with this file!!! (SUPRO_SC03_Rendering_01-2023.jpg)
I do not understand the world anymore.
How can this be?

When i delete the Sky Objects for reflections, the rendering is OK.
Could it be a problem with my two Corona Sky Objects (one for exposure, one for reflections)?
But why did work in sept. 2022?

[mapa]

I think you have to change your Spline Object under the Lathe Nurbs from Adaptive to subdivided.
The Normals of your Lathe are looking in the wrong Direction. You have to flip Normals. (but this has no Impact of your Problem)
I hope this helps.

[Beanzvision]

Hi there, may I ask what version of Corona you are using?