first commit

frontend/node_modules/antd/es/select/mergedBuiltinPlacements.js

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+const getBuiltInPlacements = popupOverflow => {
+  const htmlRegion = popupOverflow === 'scroll' ? 'scroll' : 'visible';
+  const sharedConfig = {
+    overflow: {
+      adjustX: true,
+      adjustY: true,
+      shiftY: true
+    },
+    htmlRegion,
+    dynamicInset: true
+  };
+  return {
+    bottomLeft: Object.assign(Object.assign({}, sharedConfig), {
+      points: ['tl', 'bl'],
+      offset: [0, 4]
+    }),
+    bottomRight: Object.assign(Object.assign({}, sharedConfig), {
+      points: ['tr', 'br'],
+      offset: [0, 4]
+    }),
+    topLeft: Object.assign(Object.assign({}, sharedConfig), {
+      points: ['bl', 'tl'],
+      offset: [0, -4]
+    }),
+    topRight: Object.assign(Object.assign({}, sharedConfig), {
+      points: ['br', 'tr'],
+      offset: [0, -4]
+    })
+  };
+};
+function mergedBuiltinPlacements(buildInPlacements, popupOverflow) {
+  return buildInPlacements || getBuiltInPlacements(popupOverflow);
+}
+export default mergedBuiltinPlacements;