I can confirm this issue. Replace All does not work. Additionally, there is a problem with the Replace All Scope. The "Entire Document" scope does nothing when doing a "Replace All"; however, both "Replace" and "Replace & Find" do work with the "Entire Document" scope - you just have to step through each instance (as expected). If you are only looking to narrow the scope to a "Selected Text" area (as you would expect the scope to contain) however, clicking "Replace" or "Replace & Find" to step through will actually replace ALL of the selected text with your replacement. I would expect that it would step through the selected text for the "Find" criteria - it seems to ignore the find criteria when the scope is "Selected Text". Again, the "Replace All" button does not work with either "Replace All Scope" parameters.