This is a relatively minor graphical bug, but a bug nonetheless.
When I click "Analyze" then "Defragment," the "xx% Fragmentation" of both the "Analysis Results" section and the "Current state" start out the same, as expected. But as the percent fragmentation goes down in the "Current state" section, it also goes down in the "Analysis Results" section. So "percent fragmentation" of the "Analysis Results" section changes when it shouldn't, even though the "# of Fragmented files" and "# of Total fragments" stays fixed after analysis.