message: Move the read receipt animation to the compositing layer
diff: @@ -280,6 +280,7 @@ $left-gutter: 64px;
  height: $font-14px;
  width: $font-14px;
  + will-change: left, top;
  transition:
  left var(--transition-short) ease-out,
  top var(--transition-standard) ease-out;
  