It looks like to me you have changed the case settings.
Change this by clicking on the change case icon beside shrink text.
Also try highlighting your text > right click > click font > check if the effect all caps is selected.
If so unselect it.
Change this by clicking on the change case icon beside shrink text.
Also try highlighting your text > right click > click font > check if the effect all caps is selected.
If so unselect it.