diff --git a/platform/mv3/extension/css/unpicker-ui.css b/platform/mv3/extension/css/unpicker-ui.css
index c05bf6eaa..c2c6a4c35 100644
--- a/platform/mv3/extension/css/unpicker-ui.css
+++ b/platform/mv3/extension/css/unpicker-ui.css
@@ -29,6 +29,7 @@
 
 #ubol-unpicker #customFilters {
     font-family: monospace;
+    overflow: auto;
 }
 #ubol-unpicker .customFilter {
     display: flex;