The main window of Fix it cannot be resized, or maximized.
This makes it hard to see all the troubleshooters at once, since you cannot resize the window vertically to see all the troubleshooters at once.
Nor can you see the names of all the troubleshooters, since you cannot resize the window horizontally to see the names of the troubleshooters.
Screenshot: fixitfixit.png
p.s. kudos on respecting my Windows font preferences; you just need to also size the window to match the font preference