Glyphs Mini is showing all my glyphs with proper names and that’s really nice. Though, when exporting to OTF and then e.g. opening the file in Robofont, some glyphs are called “uniXXXX” (where XXXX is four hexadecimal characters).
That is OK. In compiled OTFs, there are certain technical requirements for glyph names, so-called ‘production names’. Glyphs takes care of that automatically. Search for ‘production names’ in the tutorials to learn more. But you don’t need to worry about it at all.