Fix sidebar page explorer transitions - avoid overflow

CHANGELOG.txt

@@ -9,6 +9,7 @@ Changelog
  * Fix: Ensure custom rich text feature icons are correctly handled when provided as a list of SVG paths (Temidayo Azeez, Joel William, LB (Ben) Johnston)
  * Fix: Ensure manual edits to `StreamField` values do not throw an error (Stefan Hammer)
  * Fix: Fix sub-menus within the main menu cannot be closed on mobile (Bojan Mihelac)
+ * Fix: Fix animation overflow transition when navigating through subpages in the sidebar page explorer (manu)
  * Docs: Move the model reference page from reference/pages to the references section as it covers all Wagtail core models (Srishti Jaiswal)
  * Docs: Move the panels reference page from references/pages to the references section as panels are available for any model editing, merge panels API into this page (Srishti Jaiswal)
  * Docs: Move the tags documentation to standalone advanced topic, instead of being inside the reference/pages section (Srishti Jaiswal)

CONTRIBUTORS.md

@@ -851,6 +851,7 @@
 * Joel William
 * Ataf Fazledin Ahamed
 * Ayaan Qadri
+* manu
 
 ## Translators
 

client/src/components/Sidebar/SidebarPanel.scss

@@ -13,6 +13,7 @@
   z-index: 400;
   display: flex;
   flex-direction: column;
+  overflow: hidden;
 
   @include media-breakpoint-up(sm) {
     z-index: var(--z-index);

docs/releases/6.4.md

@@ -23,6 +23,7 @@ depth: 1
  * Ensure custom rich text feature icons are correctly handled when provided as a list of SVG paths (Temidayo Azeez, Joel William, LB (Ben) Johnston)
  * Ensure manual edits to `StreamField` values do not throw an error (Stefan Hammer)
  * Fix sub-menus within the main menu cannot be closed on mobile (Bojan Mihelac)
+ * Fix animation overflow transition when navigating through subpages in the sidebar page explorer (manu)
 
 ### Documentation