Error displayed when deleting subwiki containing objects with global scope

Can't reproduce on 16.10.8.

Steps:

• Create Wiki with Flavor
• Create a new page or check a Sandbox
• Edit the page in object, add XWiki.UIExtensionClass fill it with example, set Scope for it as Global
• Return to main wiki and visit "WikiManager.WebHome"
• Trigger the deletion of created wiki 

Result

Success: The user xwiki:XWiki.Admin successfully deleted the wiki 'test'.

Unfortunately, I can't find what Jira issue was fixed for it.