I was experiencing what I believe to be the same issue. Every time I would click on the stroke/fill selector to toggle between them... the color selector would pop up right in my face. I run two monitors and had the color selector and a few other panels on my second monitor to make room for the art board. I moved the color selector panel back into the primary monitor (same as primary Illustrator toolbars) and now I can toggle between stroke and fill without anything popping up. Hope this helps!
I was experiencing what I believe to be the same issue. Every time I would click on the stroke/fill selector to toggle between them... the color selector would pop up right in my face. I run two monitors and had the color selector and a few other panels on my second monitor to make room for the art board. I moved the color selector panel back into the primary monitor (same as primary Illustrator toolbars) and now I can toggle between stroke and fill without anything popping up. Hope this helps!