Garbages up Text editor

Perhaps good for those who only use Visual editor, but as one with HTML markup knowledge who relies on using the Text editor I found it really garbaged up my text and html, adding strange <p> and <br /> tags, sometimes producing fixed-width lines when viewed in a browser. I installed it because of its ability to add different buttons but found the other “features” made it unworkable for me. This is despite trying both the “checked” and “unchecked” versions of the “advanced <p>/<br> editing” option.