TYPO3 Core

This is actually a nasty bug. When this TCA config option is enabled, the HTML structure would NOT emit this HTML:

$html[] =       '<div class="form-wizards-items-aside form-wizards-items-aside--move">';
$html[] =           '<div class="btn-group-vertical">';

but CLOSE it afterwards. This leads to a malformed HTML construct. In your v11 case this seems to lead to a javascript error. In my v12 and v13 environment it actually leads to being unable to save the record at all. Any changes to the record in FormEngine will not have an effect, and content will not be saved.

I reproduced this in v12 and v13 by adding this to a sitepackage extension:

    $GLOBALS['TCA']['pages']['columns']['shortcut']['config']['hideDeleteIcon'] = true;

and then editing the record in the backend on any page of type "shortcut". With the applied TCA, no data is persisted at all. Removing the TCA assignment will lead to a proper HTML structure.

Patch set 2 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/84897

Patch set 1 for branch 12.4 of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/84960

Patch set 1 for branch 11.5 of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/85012