[BUG] Cannot resize window in Avalonia mode

### Please confirm these before moving forward

- [x] I have searched for my issue and have not found a work-in-progress/duplicate/resolved issue.
- [x] I have tested that this issue has not been fixed in the latest [(beta or stable) release](https://github.com/Devolutions/UniGetUI/releases/).
- [x] I have checked the [FAQ](https://github.com/Devolutions/UniGetUI#frequently-asked-questions) section for solutions.
- [x] This issue is about a bug (if it is not, please use the [correct template](https://github.com/Devolutions/UniGetUI/issues/new/choose)).

### UniGetUI Version

2026.2.1

### Windows version, edition, and architecture

Windows 11 23H2 [Version 10.0.22631.7219]

### Describe your issue

The main window in the Avalonia mode cannot be resized. The mouse cursor does not change when hovering over window borders. It can be maximized though.

### Steps to reproduce the issue

_No response_

### UniGetUI Log

```text
[16.06.2026 23:33:20] __ __ _ ______ __ __ ______
/ / / /___ (_) ____/__ / /_/ / / / _/
/ / / / __ \/ / / __/ _ \/ __/ / / // /
/ /_/ / / / / / /_/ / __/ /_/ /_/ // /
\____/_/ /_/_/\____/\___/\__/\____/___/
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

```text
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_