- Add two sentences, A and B.
- Add A to a list L.
- While A is being adding (the waiting symbol is spinning), click on the "Add to a list" button => It looks like B was added to the list L (because L disappears from the dropdown), while the waiting symbol on A spins forever.
- Actually, A is correctly added to L (checked by opening L), and B cannot be added anymore unless going to the sentence page of B.
- Wherever I click during the addition of A to L, the dropdown menu of A, and its waiting symbol, should be the ones affected when the operation is over, not the one with the current focus.