WYSIWYG doesn't float as you scroll down

Just created a template to use for Quick Notes and it's quite detailed and extends for a bit. When scrolling down to fill in the details, the WYSIWYG toolbar doesn't float as you scroll down. So i find myself highlighting the section i just typed, scrolling back up to format e.g. change text colour, to have to scroll back down and type the next lot of data and repeat.