OneOf in RequestBody still doesnt work (spring-boot generator)

Multiple schemas in a RequestBody still results in generator problems, e.g.

- Classes are imported/references with the name "OneOf[....]> but those classes do not exist / are not generated

- Having UNKNOWN_BASE_CLASS references

i tried this with 3.3.4, a while ago with 4.x and now 5.0.1. So when will this finally be fixed !? 😞 Or what can I do to work around that?