diff --git a/packages/block-editor/src/components/list-view/style.scss b/packages/block-editor/src/components/list-view/style.scss
index eb05d1426c376b..4f53b66fccc903 100644
--- a/packages/block-editor/src/components/list-view/style.scss
+++ b/packages/block-editor/src/components/list-view/style.scss
@@ -295,9 +295,9 @@
 	width: $icon-size;
 }
 
-// First level of indentation is aria-level 2, max indent is 8.
+// First level of indentation is aria-level 2, max indent is 15.
 // Indent is a full icon size, plus 4px which optically aligns child icons to the text label above.
-$block-navigation-max-indent: 8;
+$block-navigation-max-indent: 15;
 .block-editor-list-view-leaf[aria-level] .block-editor-list-view__expander {
 	margin-left: ( $icon-size ) * $block-navigation-max-indent + 4 * ( $block-navigation-max-indent - 1 );
 }
diff --git a/packages/edit-post/src/components/secondary-sidebar/style.scss b/packages/edit-post/src/components/secondary-sidebar/style.scss
index 710319654a357c..a76391d3388e3d 100644
--- a/packages/edit-post/src/components/secondary-sidebar/style.scss
+++ b/packages/edit-post/src/components/secondary-sidebar/style.scss
@@ -46,6 +46,8 @@
 
 .edit-post-editor__list-view-panel-content {
 	overflow-y: auto;
+	overflow-x: auto;
+	max-width: 340px;
 	// The table cells use an extra pixels of space left and right. We compensate for that here.
 	padding: $grid-unit-10 ($grid-unit-10 - $border-width - $border-width);
 }
diff --git a/packages/edit-site/src/components/secondary-sidebar/style.scss b/packages/edit-site/src/components/secondary-sidebar/style.scss
index d7623ffe2bc935..7e555cf2080fc3 100644
--- a/packages/edit-site/src/components/secondary-sidebar/style.scss
+++ b/packages/edit-site/src/components/secondary-sidebar/style.scss
@@ -47,5 +47,7 @@
 
 .edit-site-editor__list-view-panel-content {
 	overflow-y: auto;
+	overflow-x: auto;
+	max-width: 350px;
 	padding: $grid-unit-10;
 }