Created attachment 73242 [details]
A combination of U+01B7 LATIN CAPITAL LETTER EZH and U+0301 COMBINING ACUTE ACCENT looks ugly: the accent is larger than acute over other capital letters.
pango-view --text="ÁB́ĆƷ́D́ÉF́" --font="DejaVu Serif 96"
It looks like the EZH isn’t treated as a majuscule by the Single
Substitution - Case Form.
Which I think means it needs to be added to Class 1047.
I don’t see how to do that via the GUI, but it is a simple text edit to
the .sfd files, if my diagnosis is accurate.
If so, there may be other majuscules missing from that table.