# 2026 v1.1

## Content

## Calendar

**Bug Fixes**

* Fixed an issue where the `DateValueSelected` event triggered when the drop‑down calendar updated while `DateEditor` contained a date value.
* Fixed an issue where the `PostValidation` error message did not appear after selecting an invalid date in the `C1DateEdit` drop‑down calendar. 
* Fixed an issue where `C1DateRangeEdit` did not clear its value after selecting **Clear** following the selection of the current date. 
* Fixed an issue where predefined range text was truncated when `FontStyle` was set to `Italic` in `C1DateRangeEdit`.
* Fixed a issue where `NullReferenceException` occurred when opening the drop‑down calendar after calling `Reset()` in the `DayFormatting` event of `C1DateEdit`.

## Document

**Bug Fixes**

* Fixed an issue where extra line spacing was added at the end of a `TextField`.

## FlexChart

**Bug Fixes**

* Fixed an issue where the save indicator (\*) did not appear after adding a new series through the `C1FlexRadar` Smart Tag menu.
* Fixed an issue where `C1FlexChart` calculated incorrect Y‑axis scaling during zoom operations after setting `Stacking=Stacked` at run time.
* Fixed an issue where `C1FlexChart` rendered incorrectly during panning after setting `Stacking=Stacked` at runtime.
* Fixed an issue where chart header and footer styles were not preserved after design‑time modifications.
* Fixed an issue where linear gradients rendered incorrectly in exported SVG files.
* Fixed an issue where new series created in the **Series Collection Editor** were assigned the default name `C1.Win.Chart.Series` instead of a valid series name.
* Fixed an issue where `C1FlexPie` data labels displayed incorrectly when `PieDataLabel.Position` changed from `Circular` to `Sides`.
* Fixed an issue where SVG export did not preserve line breaks in `FlexChart` data labels when label angle settings were applied.
* Fixed an issue where axis labels were clipped when grouping was enabled.
* Fixed an issue where cumulative histograms displayed an empty gap for bins with zero frequency. 
* Fixed an issue where `FlexChart` displayed incorrect axis label intervals when `TimeUnit` was set to `Week`.

## FlexGrid

**Bug Fixes**

* Fixed an issue where the sort indicator overlapped the sort icon when sorting a column with `ShowSortPositionEnum=Auto`. 
* Fixed an issue where the sort icon was positioned incorrectly when sorting a filtered column with `ShowSortPositionEnum=Auto`. 
* Fixed an issue where the sort icon was positioned incorrectly when sorting a column with fixed rows and `ShowSortPositionEnum=Auto`.
* Fixed an issue where a band appeared selected in the **ColumnPicker** dialog while the associated column remained hidden.
* Fixed an issue where `AutoSizeRows` truncated text.
* Fixed an issue where the first key press in the grid editor did not update the editor value.
* Fixed an issue where exported FlexGrid images displayed SparkLines as "(Collection)".

## FlexPivot

**Bug Fixes**

* Fixed an issue where charts appeared empty when `ChartType=Pie` and `UseAxisScrollbar=true`.
* Fixed an issue where undo operations did not restore chart palette changes correctly.

## Input

**Bug Fixes**

* Fixed an issue where text editor-based controls did not correctly handle focus state during initialization.
* Fixed a issue where `NullReferenceException` occurred when `AutoCompleteMode` was enabled while the UI Automation provider was active.

## Input.Pickers

**Bug Fixes**

* Fixed an issue where the drop‑down list did not collapse when reselecting the currently selected font.

## InputPanel

**Bug Fixes**

* Fixed an issue where `C1InputPanel` did not support item navigation for hosted `C1MultiSelect` controls.

## Ribbon

**Bug Fixes**

* Fixed an issue where `RibbonComboBox` did not clear its text when `SelectedItem` was set to `null`.
* Fixed an issue where font and button sizes did not update when applying the Material or Office365 theme.

## TouchToolKit

**Bug Fixes**

* Fixed an issue where `NullReferenceException` occurred at design time when repositioning controls within `C1ZoomPanel`.
* Fixed an issue where `C1MultiScaleImage` was rendered as a component.

## TreeView

**Bug Fixes**

* Fixed an issue where the `C1Checklist` Smart Tag could not edit items.

## TrueDBGrid

**Bug Fixes**

* Fixed an issue where the grid editor displayed a placeholder name instead of `C1.Win.TrueDbGrid.GridEditor`.
* Fixed an issue where an `AmbiguousMatchException` occurred when opening the designer after adding a control to a form.
* Fixed an issue where an incorrect row remained selected after calling `Delete()` when `TrueDBGrid.DataView` was set to `GroupByView`.
* Fixed an issue where an `InvalidCastException` occurred when focus moved to a cell in a different row after loading specific XML layout files.