Doubt it unicode, it happens to me sometimes too: like you edit trigger line and at some point all text turns into ????, if you delete last changes, sometimes it turn back into letters
Unfortunately CMUD much less friendly than zMud when you need export/import your settings, while you have to expect different with packages introduced.
Package interface/menus.... you click so ...
So I wrote my first COM server(took a while digging all documentations and learning what it is). It usually gets started from CMUD by opening with com variable.
If I close/uninitialize com var ...