[Bug]: LockRecursionException: Recursive read lock acquisitions not allowed in this mode

[dmalukov]

Describe the bug 🐞

During one of nightly stress tests our app got crashed with the following exception.
It's not clear what exactly happened and how to reproduce it.

System.Threading.LockRecursionException: Recursive read lock acquisitions not allowed in this mode.
   at System.Threading.ReaderWriterLockSlim.TryEnterReadLockCore(TimeoutTracker timeout)
   at WinRT.Cache.Create(IObjectReference obj, Int32 index, WeakReference`1 state)
   at WinRT.EventSource`1.Subscribe(TDelegate del)
   at System.Reactive.Concurrency.DispatcherQueueScheduler.ScheduleSlow[TState](TState state, TimeSpan dueTime, Func`3 action) in /_/src/ReactiveUI.Maui/WinUI/DispatcherQueueScheduler.cs:line 129
   at System.Reactive.Concurrency.DispatcherQueueScheduler.Schedule[TState](TState state, TimeSpan dueTime, Func`3 action) in /_/src/ReactiveUI.Maui/WinUI/DispatcherQueueScheduler.cs:line 109
   at System.Reactive.Concurrency.Scheduler.ScheduleAction[TState](IScheduler scheduler, TState state, TimeSpan dueTime, Action`1 action)
   at System.Reactive.Concurrency.Scheduler.SchedulePeriodicRecursive`1.Tick(Int32 command, Action`2 recurse)
   at System.Reactive.Concurrency.Scheduler.<>c__78`1.<ScheduleAction>b__78_0(IScheduler _, ValueTuple`2 tuple)
   at System.Reactive.Concurrency.DispatcherQueueScheduler.<>c__DisplayClass12_0`1.<ScheduleSlow>b__0(DispatcherQueueTimer s, Object e) in /_/src/ReactiveUI.Maui/WinUI/DispatcherQueueScheduler.cs:line 131
   at ABI.Windows.Foundation.TypedEventHandler`2.Do_Abi_Invoke[TSenderAbi,TResultAbi](Void* thisPtr, TSenderAbi sender, TResultAbi args)

We have a crash dump with a $stowedexception, so if it may be useful, we can share it with you.

Reproduction repository

https://github.com/reactiveui/ReactiveUI

IDE

Visual Studio 2022

Operating system

Windows 10 x64

ReactiveUI Version

ReactiveUI.WinUI 21.1.1