Blazor wasm ObserveOn

[stokara]

I have a new Blazor project which targets Blazor Server and, using almost all of the same code I have a wasm client.

My common ViewModels use DynamicData to load their data in a background thread and surface them to the UI

    SearchResultsCache.Connect().ObserveOn(RxApp.MainThreadScheduler).Bind(out searchResults).Subscribe(); 

While the server version works well, using the debugger it looks like the wasm client goes off and never comes back when hitting the ObserveOn, while removing the ObserveOn makes the wasm client work properly.

I read this discussion from 2 years ago ([BUG] RxApp.MainThreadScheduler wrong thread on Server-Side Blazor #2344) and my understanding is this problem is caused by the single threaded environment in wasm and that when a multi-threaded wasm is released, ObserveOn will work as expected in a wasm head. If this is true, I prefer to wait for that update rather than putting in platform specific code now.

Please verify if my understanding of this is correct.