diff --git a/packages/components/src/button/style.scss b/packages/components/src/button/style.scss
index 460aeaa2781cdf..404c737b720d8a 100644
--- a/packages/components/src/button/style.scss
+++ b/packages/components/src/button/style.scss
@@ -337,7 +337,7 @@
 		}
 
 		&.has-text {
-			justify-content: start;
+			justify-content: flex-start;
 			padding-right: $grid-unit-15;
 			padding-left: $grid-unit-10;
 			gap: $grid-unit-05;
diff --git a/packages/components/src/tabs/styles.ts b/packages/components/src/tabs/styles.ts
index 717316227ddb3c..fc31287eabf582 100644
--- a/packages/components/src/tabs/styles.ts
+++ b/packages/components/src/tabs/styles.ts
@@ -240,7 +240,7 @@ export const TabChildren = styled.span`
 		justify-content: center;
 	}
 	[aria-orientation='vertical'] & {
-		justify-content: start;
+		justify-content: flex-start;
 	}
 `;
 
diff --git a/packages/edit-site/src/components/global-styles/screen-revisions/style.scss b/packages/edit-site/src/components/global-styles/screen-revisions/style.scss
index 1773d1a179b3dd..cdde6a0b0827d9 100644
--- a/packages/edit-site/src/components/global-styles/screen-revisions/style.scss
+++ b/packages/edit-site/src/components/global-styles/screen-revisions/style.scss
@@ -121,7 +121,7 @@
 
 .edit-site-global-styles-screen-revisions__meta {
 	display: flex;
-	justify-content: start;
+	justify-content: flex-start;
 	width: 100%;
 	align-items: flex-start;
 	text-align: left;