Been having trouble behaving recently

SELECT * FROM gallery2 WHERE topic_id="1630673" UNION SELECT * FROM gallery2 WHERE topic_id="916310" UNION SELECT * FROM gallery2 WHERE topic_id="1548274" UNION SELECT * FROM gallery2 WHERE topic_id="1564156" UNION SELECT * FROM gallery2 WHERE topic_id="1592482" UNION SELECT * FROM gallery2 WHERE topic_id="822043" UNION SELECT * FROM gallery2 WHERE topic_id="1511875" UNION SELECT * FROM gallery2 WHERE topic_id="1160936" UNION SELECT * FROM gallery2 WHERE topic_id="1632201" UNION SELECT * FROM gallery2 WHERE topic_id="1489078" UNION SELECT * FROM gallery2 WHERE topic_id="256546" UNION SELECT * FROM gallery2 WHERE topic_id="1634977" UNION SELECT * FROM gallery2 WHERE topic_id="151704" UNION SELECT * FROM gallery2 WHERE topic_id="1059177" UNION SELECT * FROM gallery2 WHERE topic_id="758871" UNION SELECT * FROM gallery2 WHERE topic_id="950422"