DbSet query with AsExpandable() and async throws InvalidOperationException (IDbAsyncEnumerable)

Question

I'm trying to run an async query based on an Expression<Func<>>:

Expression<Func<IDbUserRightsInfo, bool>> expression = u => u.MarketingType == eUserMarketingType.Internal;

var result = await (from u in usersDbSet.AsExpandable()
             where expression.Invoke(u)
             select u).ToArrayAsync().ConfigureAwait(false);

But it does not work. The exception I get:

System.InvalidOperationException: The source IQueryable doesn't implement IDbAsyncEnumerable. Only sources that implement IDbAsyncEnumerable can be used for Entity Framework asynchronous operations. For more details see http://go.microsoft.com/fwlink/?LinkId=287068.

If I remove the await/async it works fine but I want to use it.

It seems to be caused by the AsExpandable() method, but it is required in order to use the built Expression.