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src/ui/Duel/PlayMat/Bg/index.tsx

@@ -59,6 +59,7 @@ const BgExtraRow: React.FC<{
           }}
           disabled={meSnap[i].disabled || opSnap[i].disabled}
           highlight={!!meSnap[i].interactivity || !!opSnap[i].interactivity}
+          /* FIXME */
           chains={{ chains: meSnap[i].chainIndex.concat(opSnap[i].chainIndex) }}
         />
       ))}