Category properties are not saved.

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.1.X, 7.2.X, Master
• Fix Version/s: 7.1.10 DXP FP19, 7.1.10.5 SP5, 7.1.X, 7.2.10 DXP FP7, 7.2.X, 7.3.4 CE GA5, 7.3.10 DXP GA1, Master
• Component/s: Categories
• Labels:
  • ee-ts
  • liferay-dxp-71-sp5
  • liferay-fixpack-dxp-19-7110
  • liferay-fixpack-dxp-7-7210
• Branch Version/s:
  7.2.x, 7.1.x
• Backported to Branch:
  Committed
• Fix Priority: 4
• Git Pull Request: https://github.com/liferay-echo/liferay-portal/pull/1482

Steps to reproduce

1. Navigate to Default site(Liferay DXP) > Categorization > Categories
2. Add a vocabulary named "test"
3. Select "test" and add a category named "Category"
4. Edit "Category" and select Properties tab
5. Add following key and value

   Key:color
   value:#ffffff

1. Click Save

Actual result
No error message is displayed in Liferay and properties are not saved. The following error is thrown in the log.

2020-07-09 07:13:39.583 ERROR [http-nio-8080-exec-6][PortletServlet:119] javax.portlet.PortletException: com.liferay.asset.category.property.exception.CategoryPropertyValueException: Invalid value #ffffff
javax.portlet.PortletException: com.liferay.asset.category.property.exception.CategoryPropertyValueException: Invalid value #ffffff

Expected result
It will show an error message and return to the correct tab after validation fail.