diff --git a/resources/ext.popups/styles/ext.popups.core.less b/resources/ext.popups/styles/ext.popups.core.less
index a3709797d..534e76f81 100644
--- a/resources/ext.popups/styles/ext.popups.core.less
+++ b/resources/ext.popups/styles/ext.popups.core.less
@@ -133,10 +133,12 @@
 		}
 
 		&[dir='ltr']:after {
+			/* @noflip */
 			right: 0;
 		}
 
 		&[dir='rtl']:after {
+			/* @noflip */
 			left: 0;
 		}
 	}