Took me a little while to figure this one out, but it appears when you Shift+Tab on a line that only contains WhiteSpace it moves the cursor back the indent spaces, but leaves the whitespace there so you end up with the indent number of spaces after your lines in code. Probably not too much of a big deal and only adds a little bit of space, but it messes up my alignment every now and then when I use Home, End, or click and start typing it places me after the spaces and I end up typing after my line too far or starting a line at an indent too far in since there are extra spaces.