Reformat (to single line per style) eats my characters
span.fakesmallcaps {font-size: .75em}
becomes:
span.fakesmallcaps { font-size: .75e; }
This happens probably only with lines which are already a single line style definition plus it does not happen always.
In my example I had 4 single line definitions at the end of the file (showing one of them above) and the very last 3 were faulty afterwards.