Databinding memory leak
https://issuetracker.google.com/issues/176886060
┬───
│ GC Root: System class
│
├─ androidx.databinding.ViewDataBinding class
│ Leaking: NO (a class is never leaking)
│ ↓ static ViewDataBinding.sReferenceQueue
│ ~~~~~~~~~~~~~~~
├─ java.lang.ref.ReferenceQueue instance
│ Leaking: UNKNOWN
│ ↓ ReferenceQueue.head
│ ~~~~
├─ androidx.databinding.ViewDataBinding$WeakListener instance
│ Leaking: UNKNOWN
│ ↓ ViewDataBinding$WeakListener.mObservable
