Issue sent to gather conversations on WebView2 Update this morning that broke Appsource visuals rendering : https://community.fabric.microsoft.com/t5/Desktop/Problem-to-render-custom-visual-deneb-ch...
Hi,
I'm sorry to hear about the inconvenience. This is a known issue affecting users who have updated to the latest version of WebView2 (26.0.2592.113). It has been posted on our public forum, Microsoft Fabric Support and Status | Microsoft Fabric for everyone's awareness, and we are actively working on a resolution.