Why does the editor not work correctly when editing content of newsletters?

I am not using the factory tinyMCE editor. I use Ultimate tinyMCE plugin. Whenever I want to edit the newsletter and I click on the "content" the editor does not display a scroll bar so I can scroll up/down through the content. Can this be fixed? I am assuming this is because my editor has extra built in tool bar features forcing the screen to not load right? Just guessing on that. Can you fix it? Thanks. Gary