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OpenSep 4, 2026
Due by September 18, 2026
•Last updated 55% 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).
- Status: Open.#14938 In dotnet/winforms;
Add a per-state stroke model for Net11 editable-control borders
waiting-author-feedbackThe team requires more information from the authorThe team requires more information from the authorStatus: Open (in progress).