ok, for me with 2.15 somehow the policy properties is showing different (please see / compare the screen shots), I have selected multiple options and in select box, on change to YouTube the height and width options are coming up. Do you have only one option in Embedabble select box or multiple ?

what is the version of AEM Core components? , can you try update to latest? 2.15.0

Do you see any errors in Console Tab (Inspect element) - JavaScript errors?

In Design dialog (Template -- Embed Policy) , you have to select the Option YouTube (Template) and then if you select YouTube in selection box, you will get the remaining options 

Can you paste your dialog image hereAre you saying, you are not able to see three Radio options?  (URL , Embeddable, HTML) you have to select Embeddable Radio option to see the height and width details dialog 

can you please post complete test class here,  == The below code is correct and should work ==RequestParameterMap requestParameterMap = mock(RequestParameterMap.class);when(requestParameterMap.entrySet()).thenReturn(params.entrySet()); === try this onewhen(parameterMap.isEmpty()).thenReturn(Boolean....

You can extend any core component or customize functionality.Try like this: Step 1: Create an Interface to extend ContentFragment class and add a method to return pathStep 2: Implement the class , use Delegation ==== Declare an Interface to ContentFragment Extention Class =========import com.adobe.c...

Can you please give your code snippet here (xml)

Hi @aditidwivedi you can try this blog alsohttps://www.albinsblog.com/2021/02/how-to-reuse-editable-template-with-multiple-sites-in-aem.html

Thank you @Jagpreet_Singh_  @kautuk_sahni Adobe Experience Manager League Community.Congratulations to All MVPs