Steps to reproduce

1. Go to demo and edit the html yaml with the following code: 
   /mtk2/dialogs/components/html.yaml

    form:
     properties:
       description:
         $type: textField
       headline:
         $type: textField
       video:
         $type: textField
         placeholder: https://
         required: true
         label: generic_link_url_label
         validators:
           url:
             $type: regexpValidator
             pattern: "^(https?|http)://[-a-zA-Z0-9+&@#/%?=~_|!:,.;]*[-a-zA-Z0-9+&@#/%=~_|]"
             errorMessage: generic_validation_wrong_url
             
     layout:
       $type: tabbedLayout
       tabs:
         myContent:
           label: My Content
           fields:
             - name: headline
             - name: video

2.  Go to Pages app and create a page (basic page template)
3. Open the page and within the main area, create an HTML component
4. Check no tab name is displayed
5. Now go back to the html yaml definition and include a second tag:  
   /mtk2/dialogs/components/html.yaml

    form:
     properties:
       description:
         $type: textField
       headline:
         $type: textField
       video:
         $type: textField
         placeholder: https://
         required: true
         label: generic_link_url_label
         validators:
           url:
             $type: regexpValidator
             pattern: "^(https?|http)://[-a-zA-Z0-9+&@#/%?=~_|!:,.;]*[-a-zA-Z0-9+&@#/%=~_|]"
             errorMessage: generic_validation_wrong_url
             
     layout:
       $type: tabbedLayout
       tabs:
         myContent:
           label: My Content
           fields:
             - name: headline
             - name: video
         myData:
           label: My data
           fields:
             - name: description

6. Go back to the Pages app and open the page created at step 2
7. Create an HTML component
8. Check now the tab names appear

Expected results

Even when a dialog has a single tab, the tab name must be displayed

Actual results

Only when the dialog has more than one tab the tab name is displayed

Workaround

N/A

Development notes

N/A