Let me try to explain the "bug" or at least what confused me a bit :) : I had all glyphs correct besides the very last one. Then I placed a glyph and it was shown PURPLE. Based on my logic, the last glyph can only be correct or wrong. It cannot be a glyph which is at the wrong place, because there is no other place to put it. I think I understand what you meant: The evaluation does not take into account the already placed glyphs. Based on my logic it is a bit misleading, but maybe my logic is wrong :D. I hope I could explain it.