# 2025 v2.1

## Content

## **Core**

**Improvements**

* Updated the filter icon to improve visual consistency and clarity.

## **FlexViewer**

**Bug fixes**

* Fixed a null reference exception that occurred when clicking the **Thumbnails** button in FlexViewer, including scenarios where no report was loaded or when **PageBackground** was set.
* Fixed an issue where thumbnail pages did not reflect the current **RotateView** setting.
* Fixed an issue where **ThumbnailPageNumbers** were not displayed when opening the **Thumbnails** section.
* Fixed an issue where outline entries were displayed as a bulleted list in the **Outline** pane, unlike behavior in WinUI and WPF.
* Fixed an issue where the **ThumbnailOverBackground** property did not apply correctly.
* Fixed an issue where the **ThumbnailSelectedBackground** property did not take effect.
* Fixed an issue where the **ThumbnailSelectedOverBackground** property did not take effect.
* Fixed an issue where the included **gclicx** file was invalid, causing a trial dialog to appear in the FlexViewer sample when a built-in trial license was present in **gclm**.
* Fixed dropdown closing unexpectedly when toggling checkbox items in the Parameters tab of FlexViewer.
* Fixed an issue where the **PageBackground** color was not applied to the visible page area.
* Fixed OleDb and SQLite DataSource Compatibility Issues Across Platforms

## **Grid**

**Bug fixes**

* Fixed unhandled exception that occurred in design view when adding columns to the grid using XAML markup.
* Fixed an issue where the grid entered edit mode when a double right-click was performed using the mouse.
* Fixed a null reference exception that occurred when accessing the **CellFactory** or **PropertyInfo** properties of grid columns that were not attached to a grid.
* Fixed an exception that occurred when scrolling the **Flexgrid** with mouse-wheel.
* Fixed an exception that occurred when applying **Aggregate** and **Format** properties to DateTime columns in a **GridSummaryRow**.
* Fixed an issue with detail rows used with grouping, where collapsing a group affected only the first row and aggregates were calculated incorrectly.

## **GridControl**

**Improvements**

* Improved layout handling to prevent layout reentrancy and reduce unnecessary layout passes.