SDL3: SDL_CreateWindowWithProperties: window creation with SDL_PROP_WINDOW_WIN32_HWND_POINTER can't handle events across processes

[deadlocklogic]

Creating a window with SDL_CreateWindowWithProperties from a SDL_PROP_WINDOW_WIN32_HWND_POINTER handles events normally only if it is called from the same process where the foreign window was created.
Trying the same procedure with a handle from an external process isn't polling any events.

Notice:
The foreign window is also created using SDL3.

Platform: Windows 11
SDL3 main branch

[slouken]

Is it valid to use a Window handle from a foreign process in Win32 API calls? I haven't tried this. You definitely won't get any events, because the process that created the window (in fact the thread that created the window) is the one that gets events for it.