Pull request #3561: BI-126486 fix: 分组表滚动条拖不动【样板客户】

Merge in VISUAL/fineui from ~DAILER/fineui:es6 to es6

* commit 'cc075cc34cab2a451e96320e7c38dc2e255fdca4':
  BI-126486 fix: 分组表滚动条拖不动【样板客户】

packages/fineui/src/base/collection/collection.js

@@ -400,12 +400,13 @@ export class CollectionView extends Widget {
         } catch (e) {}
         this._calculateChildrenToRender();
     }
+
     setScrollLeft(scrollLeft) {
         if (this.options.scrollLeft === scrollLeft) {
             return;
         }
         this._scrollLock = true;
-        this.options.scrollLeft = clamp(scrollLeft || 0, 0, this._getMaxScrollLeft());
+        this.options.scrollLeft = clamp(scrollLeft || 0, 0, this._getMaxScrollLeft() || scrollLeft);
         this._debounceRelease();
         this.element.scrollLeft(this.options.scrollLeft);
         this._calculateChildrenToRender();
@@ -416,7 +417,7 @@ export class CollectionView extends Widget {
             return;
         }
         this._scrollLock = true;
-        this.options.scrollTop = clamp(scrollTop || 0, 0, this._getMaxScrollTop());
+        this.options.scrollTop = clamp(scrollTop || 0, 0, this._getMaxScrollTop() || scrollTop);
         this._debounceRelease();
         this.element.scrollTop(this.options.scrollTop);
         this._calculateChildrenToRender();