Strange Behavior with Style Manager

Clean Up (Classes)
Not sure how this happened.

Notice (first image) - I have a class BaseSectionFont.

Notice it’s at the bottom of the list and assigned to txt_About Us.

When I tried to delete the class… I get the “None” at the to of the list.

Selecting “Remove” gives didn’t do anything.

So then I removed the BaseSectionFont class from txt_AboutUs…

And selected Clean Up again.

This time… I got the results of Image 2.

Notice that BaseSectionFont is still assigned to txt_AboutUs - and is displayed at the bottom of the list…

while also having 2 entries at the top of the list.

Selecting Remove at this point fixed everything.

Am I misunderstanding the interface ?