Hey @j90 do you have a link to the editor? Not entirely sure, but do you have two styles with the same name? For example the property editor Style says “Standard Button GreyDark” (capital G) and the editor version has that as “Standard Button greyDark” (lowercase g).
Hmm… that’s so odd. If you can’t replicate it, does it continue to happen in your app when you create a new button from scratch with that style? Maybe delete the style, create a new one, and apply the style to the button so you don’t lose workflows?
The only other thing I can think of is… the Simpsons are trying to design your app.