diff --git a/editor/components/block-list/style.scss b/editor/components/block-list/style.scss
index 0a7f960aa041f1..b27328a44ad90d 100644
--- a/editor/components/block-list/style.scss
+++ b/editor/components/block-list/style.scss
@@ -659,11 +659,6 @@
 	height: $block-padding * 2; // Matches the whole empty space between two blocks
 	justify-content: center;
 
-	// Don't show the sibling inserter before the selected block.
-	.is-selected & {
-		display: none;
-	}
-
 	// Show a clickable plus.
 	.editor-block-list__insertion-point-button {
 		margin-top: -4px;
@@ -709,6 +704,11 @@
 	}
 }
 
+// Don't show the sibling inserter before the selected block.
+.edit-post-layout:not( .has-fixed-toolbar ) .is-selected .editor-block-list__insertion-point-inserter {
+	display: none;
+}
+
 .editor-block-list__block {
 	> .editor-block-list__insertion-point {
 		position: absolute;