When posts are written in Latin (see Should all-Latin questions be permitted?), they are quite likely to contain serious errors – broken grammar, bad word choices, etc. – because the author isn’t a native speaker. Should we edit those posts to try and fix the errors, point them out in a comment, ignore them, or deal with them in any other way?
Consider that someone who has found an error isn’t a native speaker, either, and may be unsure how to correct it or even whether it actually is an error.