CAS transportable Java object not serialised or deserialised with compressed binary

I have been experimenting with wrapping a CAS transportable Java HashMap inside an UIMA type, and I found that the internal UIMA FSArray is either not stored or restored, although _save_to_cas_data and _init_from_cas_data of UimaSerializableFSs are called during serialisation and deserialisation of a compressed CAS binary. I have not yet been able to pinpoint where it goes wrong, serialisation or deserialisation, but I attached a simple Maven project with a test that reproduces the problem. Notice that the test that uses XMI succeeds, while the one that uses SerialFormat.COMPRESSED_FILTERED_TS fails.

cas-transported-java-objects.zip