Merge pull request #9169 from igorantunesms/patch-1

Add limitation - Custom Icons

Author: mduelae

powerapps-docs/user/modern-fluent-design.md

@@ -93,6 +93,10 @@ Switching themes or enabling dark mode isn't supported at this time.
 
 With the modern, refreshed look, Power Apps is no longer honoring [classic theme customizations](../maker/model-driven-apps/create-themes-organization-branding.md). You can, however, override the colors for the app header to match your organization branding with the modern, refreshed look. See [change the color of the app header](#change-the-color-of-the-app-header) for more details.  Other theme customization options for the modern, refreshed look aren't available yet.  
 
+### Custom icons
+
+Only SVG icons are supported. If you use other formats such as PNG, the navigation won't display them and a default icon will appear instead.
+
 ## Frequently asked questions (FAQs)
 
 ### Using the modern, refreshed look in Power Apps Component Framework / custom code components