3.5 (3515) on macOS 26.2 (25C56)
I open a UFO and save as a .glyphs file. Then I uncheck “Custom Glyph Names” and Select All and “Update Glyphs”, the names are now Glyphs App readable names. When I go to decompose a glyph with components, they disappear upon decomposition. I have to save the file then reopen it for that not to happen.