That just shows you the properties though, doesn't it? My usual problem is that the style properties seem OK, but the styles themselves are being applied to the wrong bits of text. Then when I try to fix it by removing the unwanted style from the incorrectly-styled portion, the section that was OK loses its style too! It's as if word's internal record of where each block of formatting begins and ends has got out of whack somehow, and when called upon to change a part of one styled section ends up changing the whole thing. (Or perhaps my mental model is wrong? But most of the tine, this sort of thing does work...)
This doesn't have to happen that many times to become really annoying...