diff --git a/css/properties/align-self.json b/css/properties/align-self.json
index e91372b2ef8e7d..3eaf9dd26df0a7 100644
--- a/css/properties/align-self.json
+++ b/css/properties/align-self.json
@@ -513,19 +513,27 @@
             ],
             "support": {
               "chrome": {
-                "version_added": "122"
+                "version_added": "122",
+                "impl_url": "https://crbug.com/376097648",
+                "partial_implementation": true,
+                "notes": "Only works when the element has a non-auto inset."
               },
               "chrome_android": "mirror",
               "edge": "mirror",
               "firefox": {
-                "version_added": "134"
+                "version_added": "134",
+                "impl_url": "https://bugzil.la/2026174",
+                "partial_implementation": true,
+                "notes": "Only works when the element has a non-auto inset."
               },
               "firefox_android": "mirror",
               "oculus": "mirror",
               "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
-                "version_added": "26"
+                "version_added": "26",
+                "partial_implementation": true,
+                "notes": "Only works when the element has a non-auto inset."
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
diff --git a/css/properties/justify-self.json b/css/properties/justify-self.json
index 1415e42673b900..32cbd425aa5eb7 100644
--- a/css/properties/justify-self.json
+++ b/css/properties/justify-self.json
@@ -264,19 +264,27 @@
             ],
             "support": {
               "chrome": {
-                "version_added": "122"
+                "version_added": "122",
+                "impl_url": "https://crbug.com/376097648",
+                "partial_implementation": true,
+                "notes": "Only works when the element has a non-auto inset."
               },
               "chrome_android": "mirror",
               "edge": "mirror",
               "firefox": {
-                "version_added": "134"
+                "version_added": "134",
+                "impl_url": "https://bugzil.la/2026174",
+                "partial_implementation": true,
+                "notes": "Only works when the element has a non-auto inset."
               },
               "firefox_android": "mirror",
               "oculus": "mirror",
               "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
-                "version_added": "26"
+                "version_added": "26",
+                "partial_implementation": true,
+                "notes": "Only works when the element has a non-auto inset."
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
diff --git a/css/properties/place-self.json b/css/properties/place-self.json
index d2b03d9314b142..c71b4447edef75 100644
--- a/css/properties/place-self.json
+++ b/css/properties/place-self.json
@@ -146,19 +146,27 @@
             ],
             "support": {
               "chrome": {
-                "version_added": "122"
+                "version_added": "122",
+                "impl_url": "https://crbug.com/376097648",
+                "partial_implementation": true,
+                "notes": "Only works when the element has a non-auto inset."
               },
               "chrome_android": "mirror",
               "edge": "mirror",
               "firefox": {
-                "version_added": "134"
+                "version_added": "134",
+                "impl_url": "https://bugzil.la/2026174",
+                "partial_implementation": true,
+                "notes": "Only works when the element has a non-auto inset."
               },
               "firefox_android": "mirror",
               "oculus": "mirror",
               "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
-                "version_added": "26"
+                "version_added": "26",
+                "partial_implementation": true,
+                "notes": "Only works when the element has a non-auto inset."
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",