Update faq.yml

Author: hirenshah1

articles/cloud-services-extended-support/faq.yml

@@ -201,6 +201,13 @@ sections:
         answer: |
           Yes. The reason that we enforce region boundaries is to prevent users from creating architectures that have cross region dependencies. Regional isolation is a key design principle of cloud based applications. However, you can use the Key Vault extension to get cross subscription and cross region support for your certificates. Please refer to the documentation [here](./enable-key-vault-virtual-machine.md)
           
+  - name: Known Issues
+    questions:
+      - question: |
+          Role Instance Scaling keeps failing, how to mitigate this ?
+        answer: |
+          When multiple Scale calls happen on the same Cloud Service (for different roles) at the same approximate time, due to a race condition, the Microsoft Platform components go out of sync leading to failures. Microsoft is actively working on resolving this issue. The workaround suggested for the interim is not to auto scale all roles simultaneously.
+          
 additionalContent: |
 
   ## Next steps