[BUG] Cannot exit the About window in Avalonias mode

[Anixx]

Please confirm these before moving forward

• I have searched for my issue and have not found a work-in-progress/duplicate/resolved issue.
• I have tested that this issue has not been fixed in the latest (beta or stable) release.
• I have checked the FAQ section for solutions.
• This issue is about a bug (if it is not, please use the correct template).

UniGetUI Version

2026.2.1

Windows version, edition, and architecture

Microsoft Windows [Version 10.0.22631.7219]

Describe your issue

It is impossible to exit the About window. There is no close button annd Esc does not work either, clocking outside of the window does not work as well.

Steps to reproduce the issue

No response

UniGetUI Log

[16.06.2026 23:33:20]    __  __      _ ______     __  __  ______
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                      \____/_/ /_/_/\____/\___/\__/\____/___/
                          Welcome to UniGetUI Version 2026.2.1
[16.06.2026 23:33:20]   
[16.06.2026 23:33:20] Build 107
[16.06.2026 23:33:20] UI Framework: Avalonia
[16.06.2026 23:33:20] Data directory C:\Users\User\AppData\Local\UniGetUI
[16.06.2026 23:33:20] OS: Microsoft Windows 10.0.22631
[16.06.2026 23:33:20] Process arch: X64 (OS: X64)
[16.06.2026 23:33:20] Runtime: .NET 10.0.9
[16.06.2026 23:33:20] Loaded language locale: ru
[16.06.2026 23:33:20] Elevated: False
[16.06.2026 23:33:20] Packaged (MSIX): False
[16.06.2026 23:33:20] Args: (none)
[16.06.2026 23:33:21] Command cargo-binstall.exe was not found on the system
[16.06.2026 23:33:21] Unable to retrieve secret for resource 'UniGetUI/GitHubAccessToken': Элемент не найден.
                      
                      Не удается получить учетные данные из хранилища
[16.06.2026 23:33:22] Starting Avalonia shell bootstrap
[16.06.2026 23:33:22] Loaded language locale: ru
[16.06.2026 23:33:22] Generated a IPC API auth token for the current session
[16.06.2026 23:33:22] Command pinget.exe was not found on the system
[16.06.2026 23:33:22] PowerShell is enabled and was found on C:\windows\System32\WindowsPowerShell\v1.0\powershell.exe
[16.06.2026 23:33:22] Command pwsh.exe was not found on the system
[16.06.2026 23:33:22] PowerShell7 is enabled but was not found on the system!
[16.06.2026 23:33:22] Command vcpkg.exe was not found on the system
[16.06.2026 23:33:22] Command vcpkg was not found on the system
[16.06.2026 23:33:22] Command vcpkg was not found on the system
[16.06.2026 23:33:22] Vcpkg root was not found. Please define the %VCPKG_ROOT% environment variable or define it from UniGetUI Settings
[16.06.2026 23:33:22] vcpkg is enabled but was not found on the system!
[16.06.2026 23:33:22] Command cargo.exe was not found on the system
[16.06.2026 23:33:22] Cargo is enabled but was not found on the system!
[16.06.2026 23:33:22] Pip is enabled and was found on C:\Users\User\AppData\Local\Microsoft\WindowsApps\python.EXE
[16.06.2026 23:33:22] Api running on named pipe UniGetUI.IPC
[16.06.2026 23:33:22] Command bun.exe was not found on the system
[16.06.2026 23:33:22] Command bun.cmd was not found on the system
[16.06.2026 23:33:22] Bun is enabled but was not found on the system!
[16.06.2026 23:33:22] Command npm.cmd was not found on the system
[16.06.2026 23:33:22] Npm is enabled but was not found on the system!
[16.06.2026 23:33:22] Command choco.exe was not found on the system
[16.06.2026 23:33:22] Chocolatey is enabled but was not found on the system!
[16.06.2026 23:33:22] Command pwsh.exe was not found on the system
[16.06.2026 23:33:22] Command scoop.ps1 was not found on the system
[16.06.2026 23:33:22] Scoop is enabled but was not found on the system!
[16.06.2026 23:33:22] An error occurred while initialising package manager Pip
[16.06.2026 23:33:22] System.InvalidOperationException: Microsoft Store python alias is not a valid python install
                         at UniGetUI.PackageEngine.Managers.PipManager.Pip._loadManagerVersion(String& version)
                         at UniGetUI.PackageEngine.ManagerClasses.Manager.PackageManager.Initialize()
[16.06.2026 23:33:22] Connected to WinGet API using packaged COM activation.
[16.06.2026 23:33:22] WinGet activation mode selected: packaged COM registration | Source: system COM registration
[16.06.2026 23:33:22] Winget is enabled and was found on C:\Users\User\AppData\Local\Microsoft\WindowsApps\winget.exe
[16.06.2026 23:33:22] .NET Tool is enabled and was found on C:\Program Files\dotnet\dotnet.exe
[16.06.2026 23:33:23] ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄
                      █▀▀▀▀▀▀▀▀▀▀▀▀▀ MANAGER LOADED ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
                      █ Name: PowerShell 5.x (aka PowerShell)
                      █ Executable name: "powershell.exe"
                      █ Executable path: "C:\windows\System32\WindowsPowerShell\v1.0\powershell.exe"
                      █ Call arguments: " -NoProfile -Command"
                      █ Version: Name                           Value                                                                                   
                      █          ----                           -----                                                                                   
                      █          PSVersion                      5.1.22621.6931                                                                          
                      █          PSEdition                      Desktop                                                                                 
                      █          PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}                                                                 
                      █          BuildVersion                   10.0.22621.6931                                                                         
                      █          CLRVersion                     4.0.30319.42000                                                                         
                      █          WSManStackVersion              3.0                                                                                     
                      █          PSRemotingProtocolVersion      2.3                                                                                     
                      █          SerializationVersion           1.1.0.1
                      █          
                      █ PowerShell 5.x is enabled and ready to go.
                      ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
[16.06.2026 23:33:23] Auto-updater source 'ProductInfo' returned version 2026.2.1.0 (upgradable=False)
[16.06.2026 23:33:23] ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄
                      █▀▀▀▀▀▀▀▀▀▀▀▀▀ MANAGER LOADED ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
                      █ Name: WinGet (aka Winget)
                      █ Executable name: "winget.exe"
                      █ Executable path: "C:\Users\User\AppData\Local\Microsoft\WindowsApps\winget.exe"
                      █ Call arguments: ""
                      █ Version: System WinGet (CLI) Version: v1.28.240
                      █          Using Native WinGet helper (COM Api)
                      █          Activation mode: packaged COM registration
                      █          Activation source: system COM registration
                      █          
                      █ WinGet is enabled and ready to go.
                      ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
[16.06.2026 23:33:23] ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄
                      █▀▀▀▀▀▀▀▀▀▀▀▀▀ MANAGER LOADED ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
                      █ Name: .NET Tool (aka .NET Tool)
                      █ Executable name: "dotnet tool"
                      █ Executable path: "C:\Program Files\dotnet\dotnet.exe"
                      █ Call arguments: "tool "
                      █ Version: 10.0.103
                      █          
                      █ .NET Tool is enabled and ready to go.
                      ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
[16.06.2026 23:33:24] Downloaded new icons and screenshots successfully!
[16.06.2026 23:33:27] Found 0 installed packages from .NET Tool
[16.06.2026 23:33:30] Found 0 installed packages from .NET Tool
[16.06.2026 23:33:30] Found 0 available updates from .NET Tool
[16.06.2026 23:33:32] Found 1 installed packages from PowerShell
[16.06.2026 23:33:32] Found 1 installed packages from PowerShell
[16.06.2026 23:33:32] Found 134 installed packages from Winget
[16.06.2026 23:33:33] Found 0 available updates from PowerShell
[16.06.2026 23:33:33] Found 21 available updates from Winget
[16.06.2026 23:33:33] Icon download attempt at https://upload.wikimedia.org/wikipedia/commons/thumb/8/83/Steam_icon_logo.svg/512px-Steam_icon_logo.svg.png failed with code BadRequest
[16.06.2026 23:33:33] Icon download attempt at https://upload.wikimedia.org/wikipedia/commons/thumb/3/31/Epic_Games_logo.svg/207px-Epic_Games_logo.svg.png failed with code BadRequest
[16.06.2026 23:33:34] Could not parse Images array from Microsoft Store response
[16.06.2026 23:33:34] Integrity check passed successfully!
[16.06.2026 23:33:34] Avalonia shell bootstrap completed
[16.06.2026 23:33:34] Could not resolve installer hosts for Mythicsoft.FileLocator version 9.3.3555.1: Failed during source operation 'manifest' for 'winget': Version '9.3.3555.1' was not found for package 'Mythicsoft.FileLocator' in source 'winget'.
[16.06.2026 23:33:34] Could not parse Images array from Microsoft Store response
[16.06.2026 23:33:34] Could not resolve installer hosts for XPFD8TKWZDH43M version 1.4.19.1: Failed during source operation 'search' for 'msstore': Response status code does not indicate success: 404 (Not Found).
[16.06.2026 23:33:34] Could not resolve installer hosts for Notepad++.Notepad++ version 8.8.1: Failed during source operation 'manifest' for 'winget': Version '8.8.1' was not found for package 'Notepad++.Notepad++' in source 'winget'.
[16.06.2026 23:33:34] Could not resolve installer hosts for XPFD8TKWZDH43M version 1.5.6.2: Failed during source operation 'search' for 'msstore': Response status code does not indicate success: 404 (Not Found).
[16.06.2026 23:33:35] Could not resolve installer hosts for TheDocumentFoundation.LibreOffice version 7.3.7.2: Failed during source operation 'manifest' for 'winget': Version '7.3.7.2' was not found for package 'TheDocumentFoundation.LibreOffice' in source 'winget'.
[16.06.2026 23:33:35] Could not resolve installer hosts for Open-Shell.Open-Shell-Menu version 4.4.197: Failed during source operation 'manifest' for 'winget': Version '4.4.197' was not found for package 'Open-Shell.Open-Shell-Menu' in source 'winget'.

Package Managers Logs

Manager WinGet with version:
System WinGet (CLI) Version: v1.28.240
Using Native WinGet helper (COM Api)
Activation mode: packaged COM registration
Activation source: system COM registration

——————————————————————————————————————————

Logged native task on manager Winget. Task type is ListSources
Process start time: 16.06.2026 23:33:23
Process end time:   16.06.2026 23:33:23

-- Task information
 ...

The task reported success

——————————————————————————————————————————
Logged subprocess-based task on manager Winget. Task type is RefreshIndexes
Subprocess executable: "C:\Users\User\AppData\Local\Microsoft\WindowsApps\winget.exe"
Command-line arguments: " source update --disable-interactivity "
Process start time: 16.06.2026 23:33:25
Process end time:   16.06.2026 23:33:27

-- Process STDOUT
 ...

Return code: SUCCESS (0)

——————————————————————————————————————————
Logged native task on manager Winget. Task type is ListInstalledPackages
Process start time: 16.06.2026 23:33:25
Process end time:   16.06.2026 23:33:32

-- Task information
 ...

The task reported success

——————————————————————————————————————————
Logged native task on manager Winget. Task type is OtherTask
Process start time: 16.06.2026 23:33:25
Process end time:   16.06.2026 23:33:31

-- Task information
 ...

The task reported success

——————————————————————————————————————————
Logged native task on manager Winget. Task type is ListUpdates
Process start time: 16.06.2026 23:33:27
Process end time:   16.06.2026 23:33:33

-- Task information
 ...

The task reported success

——————————————————————————————————————————

Relevant information

No response

Screenshots and videos

No response

[GabrielDuf]

Hi Anixx,
Could you share a screenshot of the About page? That would help us understand what might be causing the issue, as everything appears to be working correctly on my side.

[Anixx]

[Anixx]

I found out that the close button acctually exists but not visible, it is ABOVE the visible window. I saw the same bug in the VB6 IDE recreation demo project, also written in Avalonia:

BAndysc/AvaloniaVisualBasic6#20