diff --git a/docs/css/main.css b/docs/css/main.css
index a380ffd4c2..f02b3a062d 100644
--- a/docs/css/main.css
+++ b/docs/css/main.css
@@ -85,7 +85,7 @@ mark {
 }
 
 .nav-component {
-    overflow-y: auto;
+    overflow-y: scroll;
 }
 
 #page-nav {
diff --git a/packages/cli/test/functional/test_site_convert/test_basic_convert/expected/stylesheets/main.css b/packages/cli/test/functional/test_site_convert/test_basic_convert/expected/stylesheets/main.css
index e53043d5d3..86706015bd 100644
--- a/packages/cli/test/functional/test_site_convert/test_basic_convert/expected/stylesheets/main.css
+++ b/packages/cli/test/functional/test_site_convert/test_basic_convert/expected/stylesheets/main.css
@@ -85,7 +85,7 @@ mark {
 }
 
 .nav-component {
-    overflow-y: auto;
+    overflow-y: scroll;
 }
 
 #page-nav {
diff --git a/packages/cli/test/functional/test_site_convert/test_basic_convert/non_markbind_site/stylesheets/main.css b/packages/cli/test/functional/test_site_convert/test_basic_convert/non_markbind_site/stylesheets/main.css
index e53043d5d3..86706015bd 100644
--- a/packages/cli/test/functional/test_site_convert/test_basic_convert/non_markbind_site/stylesheets/main.css
+++ b/packages/cli/test/functional/test_site_convert/test_basic_convert/non_markbind_site/stylesheets/main.css
@@ -85,7 +85,7 @@ mark {
 }
 
 .nav-component {
-    overflow-y: auto;
+    overflow-y: scroll;
 }
 
 #page-nav {
diff --git a/packages/cli/test/functional/test_site_convert/test_navigation_convert/expected/stylesheets/main.css b/packages/cli/test/functional/test_site_convert/test_navigation_convert/expected/stylesheets/main.css
index a380ffd4c2..f02b3a062d 100644
--- a/packages/cli/test/functional/test_site_convert/test_navigation_convert/expected/stylesheets/main.css
+++ b/packages/cli/test/functional/test_site_convert/test_navigation_convert/expected/stylesheets/main.css
@@ -85,7 +85,7 @@ mark {
 }
 
 .nav-component {
-    overflow-y: auto;
+    overflow-y: scroll;
 }
 
 #page-nav {
diff --git a/packages/cli/test/functional/test_site_convert/test_navigation_convert/non_markbind_site/stylesheets/main.css b/packages/cli/test/functional/test_site_convert/test_navigation_convert/non_markbind_site/stylesheets/main.css
index a380ffd4c2..f02b3a062d 100644
--- a/packages/cli/test/functional/test_site_convert/test_navigation_convert/non_markbind_site/stylesheets/main.css
+++ b/packages/cli/test/functional/test_site_convert/test_navigation_convert/non_markbind_site/stylesheets/main.css
@@ -85,7 +85,7 @@ mark {
 }
 
 .nav-component {
-    overflow-y: auto;
+    overflow-y: scroll;
 }
 
 #page-nav {
diff --git a/packages/cli/test/functional/test_site_templates/test_default/expected/stylesheets/main.css b/packages/cli/test/functional/test_site_templates/test_default/expected/stylesheets/main.css
index a380ffd4c2..f02b3a062d 100644
--- a/packages/cli/test/functional/test_site_templates/test_default/expected/stylesheets/main.css
+++ b/packages/cli/test/functional/test_site_templates/test_default/expected/stylesheets/main.css
@@ -85,7 +85,7 @@ mark {
 }
 
 .nav-component {
-    overflow-y: auto;
+    overflow-y: scroll;
 }
 
 #page-nav {
diff --git a/packages/cli/test/functional/test_site_templates/test_project/expected/diagrams/example.png b/packages/cli/test/functional/test_site_templates/test_project/expected/diagrams/example.png
index 2adfadb33a..0fa4897e74 100644
Binary files a/packages/cli/test/functional/test_site_templates/test_project/expected/diagrams/example.png and b/packages/cli/test/functional/test_site_templates/test_project/expected/diagrams/example.png differ
diff --git a/packages/cli/test/functional/test_site_templates/test_project/expected/stylesheets/main.css b/packages/cli/test/functional/test_site_templates/test_project/expected/stylesheets/main.css
index 2393adcd9b..1f31d51706 100644
--- a/packages/cli/test/functional/test_site_templates/test_project/expected/stylesheets/main.css
+++ b/packages/cli/test/functional/test_site_templates/test_project/expected/stylesheets/main.css
@@ -80,7 +80,7 @@ mark {
 }
 
 .nav-component {
-    overflow-y: auto;
+    overflow-y: scroll;
 }
 
 #page-nav {
diff --git a/packages/core/template/default/stylesheets/main.css b/packages/core/template/default/stylesheets/main.css
index a380ffd4c2..f02b3a062d 100644
--- a/packages/core/template/default/stylesheets/main.css
+++ b/packages/core/template/default/stylesheets/main.css
@@ -85,7 +85,7 @@ mark {
 }
 
 .nav-component {
-    overflow-y: auto;
+    overflow-y: scroll;
 }
 
 #page-nav {
diff --git a/packages/core/template/project/stylesheets/main.css b/packages/core/template/project/stylesheets/main.css
index 2393adcd9b..1f31d51706 100644
--- a/packages/core/template/project/stylesheets/main.css
+++ b/packages/core/template/project/stylesheets/main.css
@@ -80,7 +80,7 @@ mark {
 }
 
 .nav-component {
-    overflow-y: auto;
+    overflow-y: scroll;
 }
 
 #page-nav {