See org.hibernate.search.documentation.mapper.orm.indexedembedded.includepathsanddepth.IndexedEmbeddedIncludePathsAndDepthIT introduced as part of HSEARCH-3676: there's a commented test in there because a field that is expected to be excluded is actually included.

It might have to do with how we compose filters; I suspect includePaths of nested @IndexedEmbedded should be ignored beyond a certain level, but are not. Let's investigate.