chore(*): Minor fixes.

Author: MKirova

projects/igniteui-angular/src/lib/directives/for-of/for_of.directive.ts

@@ -1581,7 +1581,7 @@ export class IgxGridForOfDirective<T> extends IgxForOfDirective<T> implements On
         const dimension = this.igxForScrollOrientation === 'horizontal' ?
             this.igxForSizePropName : 'height';
         if (dimension === 'height') {
-            size = parseInt(this.igxForItemSize, 10) || 0;
+            size = item[this.igxForSizePropName] || parseInt(this.igxForItemSize, 10) || 0;
             if (item && item.summaries) {
                 size = item.max;
             } else if (item && item.groups && item.height) {

projects/igniteui-angular/src/lib/grids/pivot-grid/pivot-grid.component.html

@@ -25,6 +25,7 @@
             let-rowIndex="index" [igxForScrollOrientation]="'vertical'" [igxForScrollContainer]='verticalScroll'
             [igxForContainerSize]='calcHeight'
             [igxForItemSize]="renderedRowHeight"
+            [igxForSizePropName]='getPropName(dim)'
             #verticalRowDimScrollContainer>
         <igx-pivot-row-dimension-content  role='row' class="igx-grid-thead" [grid]="this"
             [dimension]='dim'

projects/igniteui-angular/src/lib/grids/pivot-grid/pivot-grid.component.ts

@@ -1233,4 +1233,8 @@ export class IgxPivotGridComponent extends IgxGridBaseDirective implements OnIni
         });
         return cols;
     }
+
+    public getPropName(dim: IPivotDimension) {
+        return dim.memberName + this.pivotKeys.rowDimensionSeparator + 'height';
+    }
 }

projects/igniteui-angular/src/lib/grids/pivot-grid/pivot-grid.pipes.ts

@@ -128,6 +128,9 @@ export class IgxPivotCellMergingPipe implements PipeTransform {
                     groupData.forEach((gr, ind) => {
                         if (ind === 0) {
                             gr[prevDim.dimension.memberName + pivotKeys.rowDimensionSeparator + 'first'] = true;
+                            gr[prevDimRoot.memberName + pivotKeys.rowDimensionSeparator + 'height'] = groupData.length * this.grid.renderedRowHeight;
+                        } else {
+                            gr[prevDimRoot.memberName + pivotKeys.rowDimensionSeparator + 'height'] = 1;
                         }
                         gr[prevDim.dimension.memberName + pivotKeys.rowDimensionSeparator + 'rowSpan'] = groupData.length;
                     });

projects/igniteui-angular/src/lib/grids/pivot-grid/pivot-row-dimension-content.component.ts

@@ -118,7 +118,7 @@ export class IgxPivotRowDimensionContentComponent extends IgxGridHeaderRowCompon
     }
 
     get headerHeight() {
-        return this.rowSpan * this.grid.renderedRowHeight;
+        return this.rowSpan * this.grid.rowHeight;
     }
 
     get isFirst() {