TYPO3 Core

The $back_path is passed empty, so when you use the t3lib_positionmap class to create a new page wizard, it refers to <plugin dir>alt_doc.php

By changing to onClickEvent function to the code below the reference is ok

function onClickEvent($pid,$newPagePID)    {
        $TSconfigProp = $this->getModConfig($newPagePID);

if ($TSconfigProp['overrideWithExtension'])    {
            if (t3lib_extMgm::isLoaded($TSconfigProp['overrideWithExtension']))    {
                $onclick = "window.location.href='".t3lib_extMgm::extRelPath($TSconfigProp['overrideWithExtension']).'mod1/index.php?cmd=crPage&positionPid='.$pid."';";
                return $onclick;
            }
        }

$params='&edit[pages]['.$pid.']=new&returnNewPageId=1';

return t3lib_BEfunc::editOnClick($params,$this->backPath,$this->R_URI);
    }
(issue imported from #M8102)