diff --git a/ui-ngx/src/app/modules/home/pages/rulechain/rulechain-page.component.scss b/ui-ngx/src/app/modules/home/pages/rulechain/rulechain-page.component.scss
index db8d6322f3..636bfc5ffb 100644
--- a/ui-ngx/src/app/modules/home/pages/rulechain/rulechain-page.component.scss
+++ b/ui-ngx/src/app/modules/home/pages/rulechain/rulechain-page.component.scss
@@ -173,6 +173,7 @@
   }
   .mat-drawer-content.tb-rulechain-graph-content {
     overflow: hidden;
+    z-index: 0;
     .tb-rulechain-graph {
       z-index: 0;
       overflow: auto;