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PictureBox with stretched image in .Net 8 is 10 times slower than in .Net Framework

💥 regression-frameworkRegression from .NET FrameworkRegression from .NET Framework

needs-area-label

Status: Open.

Bug

#14009 In dotnet/winforms;

· Camel-RD opened on Oct 31, 2025

Cannot add custom WinForms control built with .NET 8 to Visual Studio Toolbox (“platform whose toolbox items cannot be enumerated dynamically”)

area-VSDesignerWindows Forms out-of-proc designer related issuesWindows Forms out-of-proc designer related issues

untriagedThe team needs to look at this issue in the next triageThe team needs to look at this issue in the next triage

Status: Open.

#14008 In dotnet/winforms;

· unmeshdev-emerson opened on Oct 31, 2025

[DarkMode] the Pane in the Anchor Editor should adapt to the dark mode

area-DarkModeIssues relating to Dark Mode featureIssues relating to Dark Mode feature

Status: Open.

#14005 In dotnet/winforms;

· Zheng-Li01 opened on Oct 30, 2025

Add <code>GetIPictureFromIcon()</code> to <code>AxHost</code>

api-suggestion(1) Early API idea and discussion, it is NOT ready for implementation(1) Early API idea and discussion, it is NOT ready for implementation

area-System.DrawingSystem.Drawing issuesSystem.Drawing issues

untriagedThe team needs to look at this issue in the next triageThe team needs to look at this issue in the next triage

Status: Open.

#13999 In dotnet/winforms;

· AchimStuy opened on Oct 29, 2025

Luminosity ratio of the focus indicator for the table rows with background is less than required ratio 3:1: A11y_WinForm.NETRuntime_Non-TextContrast

a11y-MASHigh Priority - Accessibility violation of Microsoft Accessibility StandardsHigh Priority - Accessibility violation of Microsoft Accessibility Standards

Status: Open.

Bug

#13995 In dotnet/winforms;

· kupatkar99 opened on Oct 27, 2025

Screen reader announcing incorrect row count information while navigating the table data: A11y_WinForm.NETRuntime_MonitorMrationsWindow_InfoAndRelationship

a11y-MASHigh Priority - Accessibility violation of Microsoft Accessibility StandardsHigh Priority - Accessibility violation of Microsoft Accessibility Standards

Status: Open.

Bug

#13994 In dotnet/winforms;

· kupatkar99 opened on Oct 27, 2025

How to enable add and delete button of CollectionEditor?

area-VSDesignerWindows Forms out-of-proc designer related issuesWindows Forms out-of-proc designer related issues

waiting-author-feedbackThe team requires more information from the authorThe team requires more information from the author

Status: Open.

#13986 In dotnet/winforms;

· Malini-SF4235 opened on Oct 23, 2025

Visual Inconsistency in MS Form While Zooming in the resolution 150%

area-HDPI-SAIssues related to high DPI SystemAware modeIssues related to high DPI SystemAware mode

Status: Open.

#13977 In dotnet/winforms;

· vimalrajsf5014 opened on Oct 21, 2025

TreeNodes without an image set are changed to the default image if ImageList is changed

🪲 bugProduct bug (most likely)Product bug (most likely)

Status: Open.

#13976 In dotnet/winforms;

· jmairboeck opened on Oct 21, 2025

VS 2026: Winforms designer (net9) doesn't release bin dll on rebuild

area-VSDesignerWindows Forms out-of-proc designer related issuesWindows Forms out-of-proc designer related issues

Status: Open.

Bug

#13974 In dotnet/winforms;

· AdmiralSnyder opened on Oct 20, 2025

· 

VS release

Does WinForms react to Dark Mode settings changes in SettingsApp of Windows (WM_SETTINGCHANGE message (lParam pointing to string "ImmersiveColorSet"))?

area-DarkModeIssues relating to Dark Mode featureIssues relating to Dark Mode feature

Status: Open.

#13935 In dotnet/winforms;

· MagicAndre1981 opened on Oct 6, 2025

UiaProvider implementation forces virtual ListView to retrieve ALL ListViewItems at WM_DESTROY

area-controls-ListView

tenet-accessibilityMAS violation, UIA issue; problems with accessibility standardsMAS violation, UIA issue; problems with accessibility standards

Status: Open.

Bug

#13922 In dotnet/winforms;

· gerhard17 opened on Oct 1, 2025