TYPO3 Core

• Copy any content element like textmedia in the backend.
• Paste it anywhere, e.g. below.
• Nothing happens, no page reload and such.
• Force reloading of backend by e.g. simply reloading the browser.
• Element is now visible as a copy, so copy-process has worked, but redirect afterwards failed.

The response of the AJAX request for copying seems incorrect:

{"redirect":"","messages":[],"hasErrors":true}

hasErrors looks like it's always set to true in the SimpleDataHandler. redirect appears to stay empty all the time.

This bug seems to have been introduced with the last version, 8.7.25. I cannot remember this happening before that version.