Make Concert pitch button tell you its current state
Currently, the state of the concert pitch button is confusing. There have been a number of discussion on this, see https://musescore.org/en/node/272384 for the latest and a list of related discussions.
I suggest one of two fixes be employed for this
Change the toggle button to a drop down like Page View/Continuous view so it will say Concert pitch and Transposed pitch. This is the preferred method.
Change the text you get when you hover over the button to tell you what will happen if you click the button. When Concert pitch is on make the text say "Click to show transposed pitch" and "Click to show concert pitch" when it's off.