Bug while using Firefox on Surface Pro 11

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### Microsoft PowerToys version

0.91.1.0

### Installation method

GitHub

### Area(s) with issue?

General

### Steps to reproduce

Using Firefox and clicking on LinkedIn Profiles caused Firefox to almost crash a few times. After that, I had a black screen for a few secs after which the error message from PowerToys appeared. However, I didn't actively use any of the features.

### ✔️ Expected Behavior

_No response_

### ❌ Actual Behavior

_No response_

### Additional Information

Version: 0.91.1.0
OS Version: Microsoft Windows NT 10.0.26200.0
IntPtr Length: 8
x64: True
Date: 2/18/2026 8:00:26 PM
Exception:
System.Runtime.InteropServices.COMException (0x80263001): {Desktop composition is disabled} The operation could not be completed because desktop composition is disabled. (0x80263001)
at Standard.NativeMethods.DwmExtendFrameIntoClientArea(IntPtr hwnd, MARGINS& pMarInset)
at System.Windows.Appearance.WindowBackdropManager.UpdateGlassFrame(IntPtr hwnd, WindowBackdropType backdropType)
at System.Windows.Appearance.WindowBackdropManager.ApplyBackdrop(IntPtr hwnd, WindowBackdropType backdropType)
at System.Windows.ThemeManager.OnSystemThemeChanged()
at System.Windows.SystemResources.SystemThemeFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)

### Other Software

_No response_

Start by reproducing the Firefox and LinkedIn interaction on Windows 11 with PowerToys 0.91.1.0, then inspect the stack-trace entry points WindowBackdropManager.UpdateGlassFrame, ApplyBackdrop, and ThemeManager.OnSystemThemeChanged. Confirm whether the desktop-composition exception can be triggered and document a reliable reproduction and expected behavior before changing code.

Written by the indexing model from the issue text.