Xcode 11.4 beta crash on @Published property subscription. What's going on?

问题

I do not know why but my code crashes on this $searchTerm publisher. I have many such publishers in my code and everything else works ok. It only does not work in this new Xcode version and works in previous version. If I commented this line and replace it with _searchTerm.projectedValue it starts working as usuall!

 _searchTerm.projectedValue
    //$searchTerm
        .debounce(for: .milliseconds(350), scheduler: DispatchQueue.global())
        .flatMap { term in
            self.search(by: term)
        }
        .print("searching")
        .receive(on: DispatchQueue.main)
        .assign(to: \.results, on: self)
        .store(in: &disposables)

I have error

Fatal error: Call of deleted method

来源：https://stackoverflow.com/questions/60155665/xcode-11-4-beta-crash-on-published-property-subscription-whats-going-on