diff --git a/apps/client/src/stylesheets/theme-next/shell.css b/apps/client/src/stylesheets/theme-next/shell.css
index 6e46e876a..ecb204bf9 100644
--- a/apps/client/src/stylesheets/theme-next/shell.css
+++ b/apps/client/src/stylesheets/theme-next/shell.css
@@ -577,15 +577,21 @@ div.quick-search .search-button.show {
     transition: background-color 100ms ease-out !important;
 }
 
-/*
- * Quick search results
- */
-
 div.quick-search .dropdown-menu {
     --quick-search-item-delimiter-color: transparent;
     --menu-item-icon-vert-offset: -.065em;
 }
 
+/*
+ * TO FIX: The quick search results dropdown has a backdrop issue with the tree panel
+ * when background effects are enabled in Electron.
+ * As a temporary workaround, the backdrop and transparency are disabled for the
+ * vertical layout.
+ */
+body.layout-vertical.background-effects div.quick-search .dropdown-menu {
+    --menu-background-color: var(--menu-background-color-no-backdrop);
+}
+
 /* Item */
 .quick-search .dropdown-menu *.dropdown-item {
     padding: 8px 12px !important;