Problem with calculating property reactivity mask of a from node

When running a test from our regression tests suite (CollectionOperatorsTest [1]), the test fails on some test configurations with following stacktrace [2].

[1] https://github.com/jboss-integration/bxms-qe-tests/blob/97d79cdf0454e0cda31469850f6ff1cf6b05c1d9/test-bre-regression/src/test/java/org/jboss/qa/brms/bre/functional/expert/CollectionOperatorsTest.java#L28
[2] https://gist.github.com/baldimir/46df36fb5516205a8974aacbaf3ac30b