message: Add comment to explain when new label pass must be rendered.
diff: @@ -371,6 +371,13 @@ export class TextElementsRenderer {
  this.reset();
  this.prepopulateScreenWithBlockingElements(dataSourceTileList);
  +
  + // New text elements must be placed either if text elements were updated in this frame
  + // or if any text element group was evicted. The second case happens when the group is not
  + // visited anymore and all it's elements just became invisible, which means there's newly
  + // available screen space where new text elements could be placed. A common scenario where
  + // this happens is zooming in/out: text groups from the old level may still be fading out
  + // after all groups in the new level were updated.
  const placeNewTextElements = updateTextElements || anyTextGroupEvicted;
  this.placeTextElements(time, placeNewTextElements);
  this.placeOverlayTextElements();
  