To be true, I did not test it precisely. And seems that there are still some issues ... hmm, thanks, I'm going to check it.
EDIT:: hmm tested. So in the end, it seems to work correctly. Only issue you see is, that generated track used for guidance from original track, do not know speed and alitude values, so mode is not correctly visible. I've added at least fill of altitude before guidance (in case of Pro version with available HGT files), so it should correctly display values based on altitude.
EDIT2: hmm back, even an altitude should be filled! Do you have HGT files in area where you try guidance?