Chaos Corona for Cinema 4D > [C4D] Bug Reporting

Bump on stacked materials

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hellyeah:
Hi guys!
I´m about to re-render an older project because of some changes. Last time I rendered it was in may this year. Now I´m getting a slightly different result. I rendered a white plastic bottle and the newly rendered one has some kind of bump.
Is it possible that I´m getting this error because of the changes in stacking materials?

After trying different things I found out that the bump results from a second, older material on the object. In my opinion it shouldn´t be seen at all. In addition its behavior is really strange. It only pops up whith a strength of 1%. If I change the strength to 100% it´s getting much smoother instead of higher.

I attached a sample scene. Maybe I´m just totally confused because it´s monday morning :-)

edit:
some further infos:
Corona Version: Build timestamp: Jun 17 2019 18:34:35
Version: 4.0 (core 4)
Cinema version: R20.059 CINEMA 4D Studio

System WIN10 and MacOs 10.13.6


expected behavior:



actual behavior:



btw: rendered with corona version 3 everything is fine ;-)
Thanks,
Dominik


edit:
excerpt from the other thread:


--- Quote from: burnin on 2019-08-12, 20:51:40 ---Can't take a look at the scene now. But from images I gather it's the texture Sampling. MipMap to be specific. I don't know what they did to it or if it's a bug, but from my experience it just got worse.

See what happens, if you disable it (set Tex. Sampling: from MipMap to None).
[/quote
--- End quote ---

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