For some reason, I can't make DistanceFieldStyle to work properly, as it breaks the font rendering ...
In this image, the upper text outside the yellow button, is Starling TextField rendering the bitmapFont (with distance field smoothness 0.5). And same font is used for the Feathers Button
I tried this:
btn.defaultLabelProperties.style = new DistanceFieldStyle(.5, .35);
... and creating the BitmapFontTextRenderer from the labelFactory, but has the same result.
I need to change the style's softness, otherwise the text becomes very pixelated.