So this isn’t really a bug per se, but the DText tags for some things are far too strict. For example, if you’re trying to make a custom link, these quotation marks do not work: “” but these, and only these, do: "". The straight quotation marks are not default on most if not all phone and computer keyboards. DText may not directly be your project, but would it be possible to adjust the parser to be a little less strict?
...I just spent half an hour fighting with the link syntax on a tag wiki page before finally noticing the quotation marks.