Users & tools on Linux are creative in creating links. Both link parent and link itself might be not normalized or being part of other link structures. I've per occasion found a case where recursive link check skips some links (it ignores IOExceptions on purpose) because the code didn't considered level of creativity from our users.

Anyway, the UnifiedTree.isRecursiveLink() code might (silently) skip valid links tests while testing for the "real path" constructed by using "wrong" parts (normalized and not normalized) of the valid link.
In such case exception below will be swallowed.

java.nio.file.NoSuchFileException: /some/path/with/link
	at java.base/sun.nio.fs.UnixException.translateToIOException(UnixException.java:92)
	at java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:106)
	at java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:111)
	at java.base/sun.nio.fs.UnixPath.toRealPath(UnixPath.java:834)

I will provide a test & a fix tomorrow.