When I was commenting on this post by @GregMartin, I realized U+200B and U+200C characters had been inserted in my code, making it non-functional.
This meta SE post states that those characters are inserted when 80 non-space characters are entered. However, this may be problematic on this site, as it deals with code and bytecounts. Removing the feature is not an option because it breaks formatting.
Can this formatting feature be changed, as suggested in the aforementioned meta post?