An invalid multipolygon is created for the [relation 15852497](https://www.openstreetmap.org/relation/15852497). That relation is broken to begin with, but osmium should never generate invalid mps. In case somebody fixes the original data, here is the broken one: [r15852497.zip](https://github.com/user-attachments/files/21955877/r15852497.zip)
An invalid multipolygon is created for the relation 15852497. That relation is broken to begin with, but osmium should never generate invalid mps.
In case somebody fixes the original data, here is the broken one:
r15852497.zip