https://bugzilla.redhat.com/show_bug.cgi?id=1574410
--- Comment #2 from Dimitrij Mijoski dmjpp@hotmail.com --- I'd say that the delta will surprise even Serbian readers, as pointed here https://ask.libreoffice.org/en/question/60778/problem-with-cyrillic-letter-b...
It would be better to completely disable the delta in Regular and Bold even for Serbian until it gets a better shape. It should not look like Greek delta.