Steps to reproduce the issue

<?php

$title = '<img src="...">';

echo HTMLHelper::_('uitab.startTabSet', 'myTab', ['active' => 'active-1']);
    echo HTMLHelper::_('uitab.addTab', 'myTab', 'active-1', $title);
        echo 'Test1';
    echo HTMLHelper::_('uitab.endTab');
    echo HTMLHelper::_('uitab.addTab', 'myTab', 'active-2', $title);
        echo 'Test2';
    echo HTMLHelper::_('uitab.endTab');
echo HTMLHelper::_('uitab.endTabSet');

?>

Expected result

Clicking on the image changes the tab.

Actual result

Uncaught TypeError: e.target.hash is undefined (joomla-tab.js:233:32)

Additional comments

Solution: joomla-projects/custom-elements#164

@dgrammatiko