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OpenSep 1, 2026
Due by September 18, 2026
•Last updated 19% complete
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ComboBox displays the selected item with a dark blue selection background when DropDownStyle is DropDownList in NET11 mode
NewApi-Net11Tracks issues for public APIs targeted for .NET 11.Tracks issues for public APIs targeted for .NET 11.rendering-or-artifacts-issuesControls paint themselves, sometimes "outside their borders." Primarily looks, not function.Controls paint themselves, sometimes "outside their borders." Primarily looks, not function.Status: Open.#14908 In dotnet/winforms;The ComboBox have the BackColor after setting DropDownStyle as DropDownList in NET11 mode
NewApi-Net11Tracks issues for public APIs targeted for .NET 11.Tracks issues for public APIs targeted for .NET 11.rendering-or-artifacts-issuesControls paint themselves, sometimes "outside their borders." Primarily looks, not function.Controls paint themselves, sometimes "outside their borders." Primarily looks, not function.Status: Open.#14907 In dotnet/winforms;[Tracking] Modern field stroke state model for Net11 editable controls (TextBoxBase)
NewApi-Net11Tracks issues for public APIs targeted for .NET 11.Tracks issues for public APIs targeted for .NET 11.rendering-or-artifacts-issuesControls paint themselves, sometimes "outside their borders." Primarily looks, not function.Controls paint themselves, sometimes "outside their borders." Primarily looks, not function.Status: Open.#14906 In dotnet/winforms;- Status: Open.#14926 In dotnet/winforms;
- Status: Open.#14927 In dotnet/winforms;
- Status: Open.#14928 In dotnet/winforms;
[Net11] Keep SplitContainer content alive while the splitter moves
rendering-or-artifacts-issuesControls paint themselves, sometimes "outside their borders." Primarily looks, not function.Controls paint themselves, sometimes "outside their borders." Primarily looks, not function.tenet-accessibilityMAS violation, UIA issue; problems with accessibility standardsMAS violation, UIA issue; problems with accessibility standardsStatus: Open.#14931 In dotnet/winforms;Research continuous SplitContainer repainting and derive the implementation approach
rendering-or-artifacts-issuesControls paint themselves, sometimes "outside their borders." Primarily looks, not function.Controls paint themselves, sometimes "outside their borders." Primarily looks, not function.Status: Open.#14932 In dotnet/winforms;Add and validate automated SplitContainer continuous-repaint coverage
rendering-or-artifacts-issuesControls paint themselves, sometimes "outside their borders." Primarily looks, not function.Controls paint themselves, sometimes "outside their borders." Primarily looks, not function.Status: Open.#14933 In dotnet/winforms;Benchmark SplitContainer repaint performance and resource stability
rendering-or-artifacts-issuesControls paint themselves, sometimes "outside their borders." Primarily looks, not function.Controls paint themselves, sometimes "outside their borders." Primarily looks, not function.Status: Open.#14935 In dotnet/winforms;Build a SplitContainer repaint sample and exploratory test matrix
rendering-or-artifacts-issuesControls paint themselves, sometimes "outside their borders." Primarily looks, not function.Controls paint themselves, sometimes "outside their borders." Primarily looks, not function.Status: Open.#14936 In dotnet/winforms;Control.BeginInvoke completion throws ObjectDisposedException when AsyncWaitHandle is disposed
🪲 bugProduct bug (most likely)Product bug (most likely)Status: Open.#14996 In dotnet/winforms;DataGridView: Excessive CPU+memory usage when closing form
tenet-accessibilityMAS violation, UIA issue; problems with accessibility standardsMAS violation, UIA issue; problems with accessibility standardstenet-accessibility-performanceAccessibility provider causes high CPU or leaks AccessibleObjects after control disposalAccessibility provider causes high CPU or leaks AccessibleObjects after control disposalStatus: Open.- Status: Open (in progress).
- Status: Open (in progress).
Form.VisualStylesMode cannot be changed from Inherit to Classic in the VS properties window
NewApi-Net11Tracks issues for public APIs targeted for .NET 11.Tracks issues for public APIs targeted for .NET 11.priority-1Work that is critical for the release, but we could probably ship withoutWork that is critical for the release, but we could probably ship withoutuntriagedThe team needs to look at this issue in the next triageThe team needs to look at this issue in the next triageStatus: Open.#15012 In dotnet/winforms;- Status: Open.#14938 In dotnet/winforms;