Hi Jan,
once again no issue here, works fine for me both audibly and when rendered, as you can see in the image of the rendered output (this time I double checked to make sure it is "shared") :
https://drive.google.com/file/d/1FeV6eKJ149-ZQMIIm-U8Gkwq97L87Mlp/view?usp=drivesdk
It would appear the issue may be related to either the Csound version or OS. But if + works then just use that for now and perhaps open a ticket on github to report the problem if you have not already done so (see link below).
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