diff --git a/dev/Styles/User/MessageView.less b/dev/Styles/User/MessageView.less
index b9a90741b..f4d404204 100644
--- a/dev/Styles/User/MessageView.less
+++ b/dev/Styles/User/MessageView.less
@@ -351,6 +351,10 @@
 		height: 100%;
 		padding: 10px;
 
+		* {
+			box-sizing: unset;
+		}
+
 		a {
 			color: blue;
 			text-decoration: underline;