diff --git a/web_src/js/components/RepoActionView.vue b/web_src/js/components/RepoActionView.vue
index 4a8da7b11d..b6bb52b3eb 100644
--- a/web_src/js/components/RepoActionView.vue
+++ b/web_src/js/components/RepoActionView.vue
@@ -945,6 +945,9 @@ export default defineComponent({
   background-color: var(--color-console-active-bg);
   position: sticky;
   top: 60px;
+  /* workaround ansi_up issue related to faintStyle generating a CSS stacking context via `opacity`
+     inline style which caused such elements to render above the .job-step-summary header. */
+  z-index: 1;
 }
 
 @media (max-width: 767.98px) {