Any characters on a web page which do not have a glyph in the current font are currently displayed as a "missing glyph" empty box. This is different to every other web browser out there which will just skip the missing glyph.

It is debatable whether this is a bug or not - it's just different to other browsers out there (including other WebKit-based browsers).

The current behaviour is particularly annoying for missing space characters, e.g. U+200B (zero width non-break space) which should not be visible and occupy no space, but instead are rendered as a "missing glyph" box.