diff --git a/client/src/app/menu/menu.component.scss b/client/src/app/menu/menu.component.scss
index f0919ed28..808a33a4a 100644
--- a/client/src/app/menu/menu.component.scss
+++ b/client/src/app/menu/menu.component.scss
@@ -344,6 +344,11 @@ my-actor-avatar {
 
 .dropdown-menu {
   width: calc(100% + 40px);
+
+  // Prevent weird display issue on firefox when global style is not loaded yet
+  &:not(.show) {
+    display: none;
+  }
 }
 
 .dropdown-item {