course, many of these difficulties we have had foreigners have had to learn English, but strangely my impression is that we often finish our English language studies with a very acceptable spelling, I would say even better than a Middle English. In our favor is, of course, that many English words of Latin origin are written in a similar way in our language.
For me, during the first months that my fluency with the language was quite unfortunate to see that my written language was more correct than the office mates around me was a source of comfort although with time-based read and write e-mails written in haste I was hitting many inaccuracies.
More information:
The 25 Most Common misspelled words (test)