Can you provide a screen shot of the issue you are having?
The Image on the left has the brush Draw As set to “Box”, the one on the right uses “Border”. Both use the same texture and margin settings. I have an UI scaling curve set to 0.9 at 768 and 1.8 at 1536.
Can you explain further what it is you mean by setting your brushes to “Box” and “Border”?
It’s the “Draw As” setting:
When you say that it scales 1:1. Do you mean according to screen size, original image size, preview screen size, or other?
Brushes with Draw As set to “Border” seem to always draw at 1:1 pixels to the screen. Even zooming in/out in the UMG editor is enough to view the problem: the border ignores the zoom and always renders its brush at 100% scale. The same happens if you wrap it around a ScaleBox: the Image size changes, but the border brush always keeps the same size relative to my monitor.