I believe that to be true yes. However Comic Sans MS is not a Unicode supported font. As referenced in the link I presented above
Comic Sans MS which lists all the character in its font packet vs say
Arial Unicode MS which is present within the font packet. You can do a simple Find on the webpage to find Zero Width Space (or not).
Further, the documentation for the font provided by Microsoft themselves denotes as having the unicode ranges of " ". As seen on their
Typographic site. Thou interesting if you look at the document for Arial Unicode MS, it too is not supportive of Unicode.