if (event.isVerticalStructureChanged()) {
                // if there are no row diffs, it seems to be a complete refresh
                if (event.getRowDiffs() == null) {
                    Collection<Rectangle> rectangles = event.getChangedPositionRectangles();
                    for (Rectangle rectangle : rectangles) {
                        Range changedRange = new Range(rectangle.y, rectangle.y + rectangle.height);
                        if (selectedRowModified(changedRange)) {
                            this.selectionLayer.clear();
                            break;
                        }
                    }
                } else {
                    // there are row diffs so we try to determine the diffs to
                    // process
                    for (StructuralDiff diff : event.getRowDiffs()) {
                        // DiffTypeEnum.CHANGE is used for resizing and
                        // shouldn't result in clearing the selection
                        if (diff.getDiffType() != DiffTypeEnum.CHANGE) {
                            if (selectedRowModified(diff.getBeforePositionRange())) {
                                this.selectionLayer.clear(); // this is causing the clear: SelectionModel 688
                                break;
                            }
                        }
                    }
                }