Resolved #4249 where ID of perpage dropdown was not unique

system/ee/ExpressionEngine/View/_shared/filters/perpage.php

@@ -13,7 +13,7 @@
 			<input
 				type="text"
 				name="<?=$name?>"
-				id="<?=$name?>"
+				id="<?=$name . uniqid()?>"
 				value="<?=htmlentities($custom_value, ENT_QUOTES, 'UTF-8')?>"
 				placeholder="<?=htmlentities($placeholder, ENT_QUOTES, 'UTF-8')?>"
 				data-threshold="<?=$threshold?>"