Can not add a fragment with ${configuration} that has a "text" type field to page

• Type: Regression Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.3.1 CE GA2, 7.3.2 CE GA3, 7.3.10 DXP GA1, Master
• Component/s: WCM
• Labels:
  • 7.3-known-issues
  • QA-AUTOMATION
• Fix Priority: 4
• Last Working Version:
  Master
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/86459
• QA Test Name:
  • LocalFile.ContentPagesWithFragmentConfiguration#AddPlaceholderConfigurationFragmentToContentPage
• QA Test Score: 5

Step to reproduce:

1. Site admin > Site Builder > Page Fragments
2. Add a new fragment
3. Edit the following code

<div class="fragment-configuration">
	<button type="button" class="btn btn-primary">${configuration.buttonText}</button>
</div>

{
  "fieldSets": [
     {
     "label": "Button",
     "fields": [
       {
         "name": "buttonText",
         "label": "Button Text",
         "description": "button-text",
         "type": "text",
	       "typeOptions": {
          "placeholder": "Set Button Name"
         },
         "dataType": "string",
         "defaultValue": ""
       }
     ]
   }
 ]
}

1. Publish
2. Add a page based on Blank
3. Add the new fragment to page

Expected Results:
The new fragment should be shown in page.

Actual Results:
Request failed. The following error is thrown in browser console.

Workaround: Add validation to typeOptions, like this:

    "type": "text",
    "typeOptions": {
        "placeholder": "Set Button Name",
        "validation": {
            "errorMessage": "",
            "type": "text"
        }
    }
 

Reproduced on:
Tomcat 9.0.17 + MySQL 5.7. Portal master GIT ID: 563dc037f8816938b79492180c370710b845e1e2.