Fix RSS button interaction on Dashboard, Project and Group activities

app/assets/stylesheets/framework/secondary_navigation_elements.scss

@@ -321,11 +321,18 @@
   }
 
   &.activities {
+    display: flex;
     border-bottom: 1px solid $border-color;
+    overflow: hidden;
 
     .nav-links {
       border-bottom: 0;
     }
+
+    @include media-breakpoint-down(xs) {
+      display: block;
+      overflow: visible;
+    }
   }
 }