I'm using a custom visual named CardWithStatesBySQL. I defined the boundaties andcolors for the three states but every timne the colors are resetted to default. How is this possible as you have the possibility to change the colorts for each state but it is not saved but resetted to default.
I see the same thing as you, using the latest version of the custom visual and the November/December versions of Power BI Desktop.
Since this visual is not made by Microsoft, the best place to start would be the 'Contact the Author' link that appears in the Visuals Gallery when you click on the visual. (In this case: email@example.com)