diff --git a/api/HTMLElement.json b/api/HTMLElement.json
index 766753e9967e36..f6d80c89d61919 100644
--- a/api/HTMLElement.json
+++ b/api/HTMLElement.json
@@ -2458,7 +2458,9 @@
             ],
             "support": {
               "chrome": {
-                "version_added": "133"
+                "version_added": "133",
+                "partial_implementation": true,
+                "notes": "This doesn't apply the focus ordering change. See [bug 383343310](https://crbug.com/383343310)."
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -2473,7 +2475,9 @@
               "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
-                "version_added": false
+                "version_added": "preview",
+                "partial_implementation": true,
+                "notes": "This doesn't apply the focus ordering change. See [bug 286575](https://webkit.org/b/286575)."
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
@@ -2957,7 +2961,9 @@
             ],
             "support": {
               "chrome": {
-                "version_added": "133"
+                "version_added": "133",
+                "partial_implementation": true,
+                "notes": "This doesn't apply the focus ordering change. See [bug 383343310](https://crbug.com/383343310)."
               },
               "chrome_android": "mirror",
               "edge": "mirror",
@@ -2972,7 +2978,9 @@
               "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
-                "version_added": false
+                "version_added": "preview",
+                "partial_implementation": true,
+                "notes": "This doesn't apply the focus ordering change. See [bug 286575](https://webkit.org/b/286575)."
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",