I think this issue is solved
Why language ID = 1 ! :rolleyes:
line 1888
echo HEADING_TITLE_GOTO . ' ' . tep_draw_pull_down_menu ('fid', tep_get_specification_filters ($specs_path, $languages_id = 1), $filter_id, 'onClick="this.form.submit();"');
change it to ==>
echo HEADING_TITLE_GOTO . ' ' . tep_draw_pull_down_menu ('fid', tep_get_specification_filters ($specs_path, $languages_id), $filter_id, 'onClick="this.form.submit();"');
Now seems working well in admin,
Other parts are checking too.