Using o!f in a VR overlay with touchscreen emulation results in a crash

[VolcanicArts]

Attempting to use osu!framework in a VR overlay (SteamVR or OVRToolkit) results in the below error being thrown. It most commonly happens with touchscreen emulation enabled.

This seems to be a regression(?) as it wasn't happening before I updated to 2023.801.0, but I cannot say for certain if I just got lucky beforehand with it not crashing.

2023-08-16 20:36:25 [error]: An unhandled error has occurred.
2023-08-16 20:36:25 [error]: System.ArgumentNullException: Value cannot be null. (Parameter 'source')
2023-08-16 20:36:25 [error]: at System.Linq.ThrowHelper.ThrowArgumentNullException(ExceptionArgument argument)
2023-08-16 20:36:25 [error]: at System.Linq.Enumerable.Where[TSource](IEnumerable`1 source, Func`2 predicate)
2023-08-16 20:36:25 [error]: at osu.Framework.Input.ButtonEventManager`1.handleButtonUp(InputState state)
2023-08-16 20:36:25 [error]: at osu.Framework.Input.ButtonEventManager`1.HandleButtonStateChange(InputState state, ButtonStateChangeKind kind)
2023-08-16 20:36:25 [error]: at osu.Framework.Input.InputManager.HandleMouseButtonStateChange(ButtonStateChangeEvent`1 e)
2023-08-16 20:36:25 [error]: at osu.Framework.Input.UserInputManager.HandleInputStateChange(InputStateChangeEvent inputStateChange)
2023-08-16 20:36:25 [error]: at osu.Framework.Input.StateChanges.ButtonInput`1.Apply(InputState state, IInputStateChangeHandler handler)
2023-08-16 20:36:25 [error]: at osu.Framework.Input.StateChanges.MouseButtonInput.Apply(InputState state, IInputStateChangeHandler handler)
2023-08-16 20:36:25 [error]: at osu.Framework.Input.InputManager.updateTouchMouseLeft(TouchStateChangeEvent e)
2023-08-16 20:36:25 [error]: at osu.Framework.Input.InputManager.HandleMouseTouchStateChange(TouchStateChangeEvent e)
2023-08-16 20:36:25 [error]: at osu.Framework.Input.InputManager.HandleInputStateChange(InputStateChangeEvent inputStateChange)
2023-08-16 20:36:25 [error]: at osu.Framework.Input.UserInputManager.HandleInputStateChange(InputStateChangeEvent inputStateChange)
2023-08-16 20:36:25 [error]: at osu.Framework.Input.StateChanges.TouchInput.Apply(InputState state, IInputStateChangeHandler handler)
2023-08-16 20:36:25 [error]: at osu.Framework.Input.InputManager.Update()
2023-08-16 20:36:25 [error]: at osu.Framework.Input.PassThroughInputManager.Update()
2023-08-16 20:36:25 [error]: at osu.Framework.Graphics.Drawable.UpdateSubTree()
2023-08-16 20:36:25 [error]: at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
2023-08-16 20:36:25 [error]: at osu.Framework.Platform.GameHost.UpdateFrame()
2023-08-16 20:36:25 [error]: at osu.Framework.Threading.GameThread.processFrame()

I did notice that a fix (from what I understood) was applied for 2023.812.0 but I thought I'd report this anyway just in case my assumptions about #5964 were incorrect

[Susko3]

Do you have reliable repro steps for this?
Are you able to reproduce on the latest release of osu!framework (2023.817.0)?

The stack trace looks to be very similar to ppy/osu#24463, which the PR you linked fixed. So if you're not able to reproduce, this issue should be closed.

[VolcanicArts]

If that PR fixed it then this can be closed, sure