I was called in to look at a printer in one of the offices that was sometimes making intermittent spelling mistakes in documents. The mistakes were either missing spaces, spaces within words or misspelled words.
I was handed a printout which had a couple of mistakes in it, I had a look at the original document on screen and it was perfect. Hit print and out came the document with spelling mistakes in different places this time!
Now this was at least 25 years ago, the printer was connected via a printer sharing box to a couple of PCs. The printer was tested in my workshop and proved faultless, the sharing box was replaced as were the connecting leads --- no difference, still random mistakes in some printouts.
I had noticed that the parallel lead connecting the printer to the sharing box was very long (I had had problems finding a replacement long enough to swap it out), the reason was that the printer had been moved and had needed an extra long lead to reach the box, it was longer than the recommended maximum length for parallel leads, moved the printer down closer to the sharer and used a much shorter lead --- the problem was cured. Turns out the problems had started after the printer had been moved.
I don't think you would ever get that with modern networked printers so I doubt if that would be the reason for the misteaks in the coonsils let her thoh.