KERNEL-11877 feat: direction:bottom和direction:top空间不够时的调整逻辑

src/core/platform/web/dom.js

@@ -384,11 +384,11 @@
             if (BI.DOM.isTopSpaceEnough(combo, popup, -1 * comboBounds.height + extraHeight)) {
                 top = comboOffset.top + comboBounds.height - containerBounds.top - popupBounds.height;
             } else if (needAdaptHeight) {
-                top = 0;
-                adaptHeight = comboOffset.top + comboBounds.height - extraHeight;
+                top = 0 - containerBounds.top;
+                adaptHeight = comboBounds.top + comboBounds.height - extraHeight;
             } else if (BI.DOM.isBottomSpaceEnough(combo, popup, -1 * comboBounds.height + extraHeight)) {
                 // 上方空间不足且不允许调整高度的情况下，优先使用下对齐
-                top = comboOffset.top + extraHeight;
+                top = comboOffset.top - containerBounds.top + extraHeight;
                 dir = "bottom";
             } else {
                 top = 0;
@@ -396,7 +396,7 @@
                     adaptHeight = windowBounds.height - extraHeight;
                 }
             }
-            if (top < 0) {
+            if (top + containerBounds.top < 0) {
                 top = 0;
             }
             return adaptHeight ? {