It seems that Cantonese Wikipedia is a candidate for the future LC support, should we really fix here? See also phab:T59106
Topic on Talk:Parsoid/Language conversion/Preprocessor fixups/20170501
Let's ask User:SSastry (WMF) and User:CAnanian (WMF).
If the flagged instances are real language converter markup, then they don't need fixup. However, if it is not language converter markup, then yes, it needs fixup.