Make avatars/icons hidden on mobile

app/assets/stylesheets/framework/timeline.scss

@@ -4,7 +4,7 @@
   padding: 0;
 
   &::before {
-    @include notes-media('max', map-get($grid-breakpoints, xs)) {
+    @include notes-media('max', map-get($grid-breakpoints, sm)) {
       background: none;
     }
   }
@@ -34,7 +34,7 @@
   .timeline-entry-inner {
     position: relative;
 
-    @include notes-media('max', map-get($grid-breakpoints, xs)) {
+    @include notes-media('max', map-get($grid-breakpoints, sm)) {
       .timeline-icon {
         display: none;
       }

changelogs/unreleased/47604-avatars-and-system-icons-for-mobile.yml

+---
+title: Make avatars/icons hidden on mobile
+merge_request: 19585
+author: Takuya Noguchi
+type: fixed