Unable to edit meta tags after validation error

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.3.0 CE GA1, 7.3.10 DXP GA1, Master
• Component/s: SEO Tools > OpenGraph tags
• Labels: None
• Fix Priority: 3
• Sprint: LIMA | #11 | Jan08-Jan21
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/83381

Steps to reproduce:

• Go to layout settings > custom meta tags
• Fill in the "property" field for the default language, leave the "content" field empty.
• Change to another language and fill both fields.
• Save (you'll get a validation error)
• Go to the default language an fill the content field.
• Save

Expected: the meta tags are saved correctly.
Actual: The content field is still empty