And to be fair in normal English orthography the word begin is never followed by two spaces. This is more like Microsoft wanting everyone to write proper English than Microsoft wanting to change the English language
I have vague memories of it being a Microsoft thing to insert two spaces at the end of every sentence? I could be misremembering.
The bug here was not "begin" followed by two spaces, but rather its "begin" followed by some other text followed by two spaces, which if i recall correctly is exactly what Microsoft would auto-format your text to.
I would love to see a link for this, blows my mind!