Adding known issue article under Viva

Author: VesaJuvonen

docs/spfx/viva/known-issues-adaptive-cards.md

@@ -0,0 +1,17 @@
+---
+title: Known issues for Adaptive Cards in Viva Connections Mobile
+description: Known issues for Adaptive Cards in Viva Connections Mobile.
+ms.date: 10/29/2021
+ms.prod: sharepoint
+ms.localizationpriority: high
+---
+# Known issues for Adaptive Cards in Viva Connections Mobile
+
+There are some known issues around the Adaptive Cards rendering on the Viva Connections Mobile experiences. These known issues are being actively worked on.
+
+1. When Image with Size value `small`, `medium` or `large` is used, it would render as square Image on mobile. A square image is recommended to be used so it maintains the aspect ratio on mobile, or other Size value “auto” might work.
+
+1. When Image with Style value `person` is used, it's recommended that image is a square so it maintains the aspect ratio on mobile.
+1. When `Input.ChoiceSet` is used, the first choice would appear to be selected on Mobile. It’s recommended to use a placeholder value as the first choice so that the user make right selection and do not end up submitting a blank value.
+1. Format date-time functions, `formatDateTime`, `formatTicks`, `formatNumber` do not work on Android. The workaround is to use JavaScript methods in Adaptive Card itself or on server.
+1. `RichTextBlock` is not yet supported.

docs/toc.yml

@@ -515,7 +515,7 @@
   - name: Overview
     href: spfx/viva/overview-viva-connections.md
   - name: Design Guidance
-    href: spfx/viva/design/designing-card.md    
+    href: spfx/viva/design/designing-card.md
   - name: Tutorials
     items:
     - name: Build your first SharePoint Adaptive Card Extension
@@ -526,6 +526,8 @@
       href: spfx/viva/get-started/advanced-quick-view-functionality.md
     - name: Adaptive Card Extensions and Teams Apps
       href: spfx/viva/get-started/adaptive-card-extensions-and-teams.md
+  - name: Known issues
+    href: spfx/viva/known-issues-adaptive-cards.md
 - name: Business Apps & Process Automation
   items:
   - name: Overview