Grid.increaseColumnWidth: fix scroll adjustment after resize

src/layout/Desktop.ts

@@ -123,7 +123,7 @@ class Desktop {
         return clamp(x, minScroll, maxScroll);
     }
 
-    private setScroll(x: number, force: boolean) {
+    public setScroll(x: number, force: boolean) {
         const oldScrollX = this.scrollX;
         this.scrollX = force ? x : this.clampScrollX(x);
         if (this.scrollX !== oldScrollX) {

src/layout/Grid.ts

@@ -175,10 +175,10 @@ class Grid {
         const rightVisibleWidth = rightColumn === null ? Infinity : visibleRange.getRight() - rightColumn.getLeft();
         const expandLeft = leftVisibleWidth < rightVisibleWidth;
         const widthDelta = (expandLeft ? leftVisibleWidth : rightVisibleWidth) + this.config.gapsInnerHorizontal;
-        if (expandLeft) {
-            this.desktop.adjustScroll(widthDelta, false);
-        }
         column.adjustWidth(widthDelta, true);
+        if (expandLeft) {
+            this.desktop.setScroll(column.gridX, false);
+        }
     }
 
     public decreaseColumnWidth(column: Column) {