clear the drag fade when a card is dropped in place

renderer/app.js

@@ -518,6 +518,8 @@ function wireCardDrag(card, game) {
   })
   card.addEventListener('dragend', () => {
     dragId = null
+    // a drop in place never re-renders the list, so drop the fade here too
+    card.classList.remove('dragging')
     clearDropMarks()
   })
   card.addEventListener('dragover', e => {