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[DarkMode] Anchor attribute selection is unclear in Dark Mode

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

Status: Open.

#14235 In dotnet/winforms;

· Amy-Li03 opened on Jan 22, 2026

Expose accessible wrappers for system dialog UI (e.g. TaskDialog) — TaskDialogAccessibleObject / DialogAccessibleObject

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

needs-area-label

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.

#14229 In dotnet/winforms;

· memoarfaa opened on Jan 21, 2026

Suspect memory leak related to RichTextBox on .Net 10.0.102

needs-area-label

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.

#14218 In dotnet/winforms;

· carltonshen-work opened on Jan 17, 2026

Performance regression in VS2026 in AvoidPassingTaskWithoutCancellationTokenAnalyzer

area-Analyzers/CodeFixesA Roslyn Analyzer is either needed for the context, needs to be scope extended or fixed.A Roslyn Analyzer is either needed for the context, needs to be scope extended or fixed.

Status: Open.

#14217 In dotnet/winforms;

· WolfgangHG opened on Jan 17, 2026

[Dark Mode] The ListView cannot display the items when setting the Enable as false

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

Status: Open.

#14210 In dotnet/winforms;

· Zheng-Li01 opened on Jan 14, 2026

DataGridView: Excessive CPU+memory usage when closing form

area-controls-DataGridView

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

Status: Open.

Bug

#14204 In dotnet/winforms;

· dpmm99 opened on Jan 13, 2026

[Dark Mode] The RichTextBox not display multiline text well when setting the Enable as False

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

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.

#14203 In dotnet/winforms;

· Zheng-Li01 opened on Jan 13, 2026

Inconsistencies between Show() and ShowAsync()

needs-area-label

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.

#14201 In dotnet/winforms;

· awaescher opened on Jan 12, 2026

.NET Core: Form Size Not Updating Correctly When DPI Scaling Exceeds 200%

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

Status: Open.

#14200 In dotnet/winforms;

· vimalrajsf5014 opened on Jan 11, 2026

[Dark Mode] Improve visual contrast of the Group Headers in ListView control in dark

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

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.

#14198 In dotnet/winforms;

· uom42 opened on Jan 9, 2026

MicrosoftForm Size Is Not Updated Correctly When DPI Scaling Exceeds 200

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

Status: Open.

#14197 In dotnet/winforms;

· vimalrajsf5014 opened on Jan 9, 2026

Textbox and Button Size Inconsistency Between .NET Framework and .NET Core in WinForms

needs-area-label

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

Status: Open.

#14196 In dotnet/winforms;

· Sasidharan-Selvakumar opened on Jan 9, 2026