Ticket #37504: 37504.5.patch

src/wp-admin/css/common.css

@@ -1298 +1298 @@
 ------------------------------------------------------------------------------*/
 
 .notice,
+div[class="update-message"], /* back-compat for pre-4.6 */
 div.updated,
 div.error {
         background: #fff;
@@ -1308 +1309 @@
         padding: 1px 12px;
 }
 
+div[class="update-message"] { /* back-compat for pre-4.6 */
+        padding: 0.5em 12px;
+}
+
 .notice p,
 .notice-title,
 div.updated p,

src/wp-admin/css/list-tables.css

@@ -1350 +1350 @@
         padding: 0;
 }
 
-.plugins .plugin-update-tr .notice {
+.plugins .plugin-update-tr .notice,
+.plugins .plugin-update-tr div[class="update-message"] { /* back-compat for pre-4.6 */
         margin: 5px 20px 15px 40px;
 }
 
+.plugins .plugin-update-tr div[class="update-message"] { /* back-compat for pre-4.6 */
+        border-left-color: #ffb900;
+        background-color: #fff8e5;
+        -webkit-box-shadow: none;
+        box-shadow: none;
+}
+
 .plugins .notice p {
         margin: 0.5em 0;
 }