System Information
Operating system: Windows 10 pro
Graphics card: rtx 2070{F8050134}

Blender Version
Broken: (2.81 beta, 125257758007, master, 2019-11-12)

I´m currently workin on a personal sculpt
I create a custom brush with alpha texture
duplicate the brush
and in the custom icon option file doesn't load anything{F8050108}