RadzenMenu - System.ArgumentOutOfRangeException

Hi,

I am using the RadzenMenu component in my app. When I click a RadzenMenuItem & I immediately press the down-arrow key on my keyboard, I am getting the following exception:

System.ArgumentOutOfRangeException:
at System.ThrowHelper.ThrowArgumentOutOfRange_IndexMustBeLessException (System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Collections.Generic.List`1.get_Item (System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Radzen.Blazor.RadzenMenu+d__25.MoveNext (Radzen.Blazor, Version=8.4.2.0, Culture=neutral, PublicKeyToken=null)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)

I was able to reproduce this error in your RadzenMenu demo
Blazor Menu Component | Free UI Components by Radzen