I noticed this on the server earlier in DVR / Manage / Shows:
Obviously, nothing critical that I can live with. 
And this issue falls in the category of "technically correct" since this was a 3-hour show so the math is good. 
I just thought of mentioning it and maybe at some point this can be fixed at the developers' leisure.
I don't think this would require logging, would it? If so, let me know and I'll gladly provide.