TYPO3 Core

The suggest wizard does not work for records with to long strings.
The label used for the suggest list is created of the records label defined in the TCA ($GLOBALS['TCA'][$table]['ctrl']['label']).

In the TYPO3\CMS\Backend\Form\Wizard\SuggestWizardDefaultReceiver in the queryTable() function the label is being used to create the array for JS to use.
The label is being taken from TYPO3\CMS\Backend\Utility\BackendUtility::getRecordTitle(). This function crops the title if exceeding a specific length and adds a span around the cropped title.

This causes the output to break and the record not being saved when selected