diff --git a/war/src/main/less/pages/plugin-manager.less b/war/src/main/less/pages/plugin-manager.less
index 975fd542f2c0..968d181baca4 100644
--- a/war/src/main/less/pages/plugin-manager.less
+++ b/war/src/main/less/pages/plugin-manager.less
@@ -137,7 +137,8 @@
   }
 
   &::before {
-    backdrop-filter: brightness(1.2) blur(20px);
+    backdrop-filter: blur(20px);
+    box-shadow: 0 0 var(--section-padding) var(--background);
 
     @supports not (backdrop-filter: blur(20px)) {
       background: var(--background);