Fixed issue #18633: Inherited value doesn't match any attribute option (

#3001)

Co-authored-by: Lapiu Dev <devgit@lapiu.biz>

application/views/themeOptions/options_core.php

@@ -135,7 +135,7 @@
                             $sParentLabelOption = $options[$sParentOption];
                             $options['inherit'] = gT($sParentLabelOption) . " ᴵ";
                         } else {
-                            $sParentOption = $sParentOption !== '' ? gT($sParentOption) : $sParentOption;
+                            $sParentOption = ! empty($options[$sParentOption]) ? gT($options[$sParentOption]) : '';
                             $options['inherit'] = $sParentOption . " ᴵ";
                         }
                     }