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Please see the official X‑Plane Support page for help.
This is a good example of a bug issue that was probably not reported to Laminar Research through the proper channels. I don't see any record of a bug in our database for helicopter shadows, and if we don't know about it, we can't fix it!
All issues that appear between versions should always be submitted as bug reports through the form here! They are most likely regression bugs that we will try to fix in the next beta.
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