That's a good question and I'll have to look out in the future to get an answer. Again, the problems are only intermittent, so I haven't pinned down the details. But I would expect that the "C" is shown to be a "C#". In other words, the jump is always the same - one half-step up. It's nothing like the old jumpy encodes problem. I've experienced plenty of that.
Have you heard of either of these bugs or problems before? I would presume it's software, rather than hardware, because the instrument otherwise works perfectly, and I never have other problems with those parameters.