https://bugzilla.redhat.com/show_bug.cgi?id=1574410
--- Comment #3 from Dimitrij Mijoski dmjpp@hotmail.com --- If you open official orthography documents of Macedonian and Serbian language, you will see that BE is written with the six look not the delta look.
Here is Macedonian orthography, scroll to page 13/368 http://www.pravopis.mk/sites/default/files/Pravopis-2017.PDF
Here is Serbian orthography, scroll to page 18 http://repo.etfovac.com/srpski-jezik/Pravopis%20MS_2010.pdf
Basically, the delta should be completely gone from the Regular and Bold.