If I name a Material with the German character ‘ß’ in it (double s) e.g. “Weiß” (white), the material is not displayed in the HTML5 embedded rendering. The default texture is shown instead.
Thank you for the report. When it comes to naming conventions in UE4, all names should be in English and only English characters should be used in order for projects to run/render properly. Here is a helpful link regarding naming conventions: A new, community-hosted Unreal Engine Wiki - Announcements - Unreal Engine Forums