IndexOutOfRange in RadialSearch

[chklauser]

fail: Microsoft.AspNetCore.Components.Server.Circuits.CircuitHost[111]
      Unhandled exception in circuit 'AedYkHamS1FTdggC3dhor-0yW79B2qsFrPSy2Q7-chw'.
      System.IndexOutOfRangeException: Index was outside the bounds of the array.
         at System.Collections.Immutable.ImmutableArray`1.System.Collections.Generic.IReadOnlyList<T>.get_Item(Int32 index)
         at Splitracker.Web.Shared.SplitrackerEnumerableExtensions.RadialSearch[T](IReadOnlyList`1 xs, Int32 startIndex)+MoveNext()
         at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
         at System.Linq.Enumerable.TryGetFirst[TSource](IEnumerable`1 source, Boolean& found)
         at Splitracker.Web.Shared.Timelines.TimelinePreview.trackFocusedTick() in /home/runner/work/splitracker/splitracker/Splitracker.Web/Shared/Timelines/TimelinePreview.razor.cs:line 126
         at Microsoft.AspNetCore.Components.ComponentBase.CallOnParametersSetAsync()
         at Microsoft.AspNetCore.Components.ComponentBase.SetParametersAsync(ParameterView parameters)
         at Microsoft.AspNetCore.Components.Rendering.ComponentState.SupplyCombinedParameters(ParameterView directAndCascadingParameters)