The winner is not properly updated in the Polls Livetable

STEPS TO REPRODUCE

1. Login as Admin or as user
2. Create a new Poll
3. Add some Proposals (e.g. Proposal1,Proposal2,Proposal3)
4. Set Status to 'Active'
5. Click 'Save & View'
6. Click to vote a proposal (e.g. Proposal2)
7. Click 'Save'
8. Observe the Winner in the Polls Livetable
9. Edit the Poll
10. Remove the previously voted proposal (e.g. Proposal2)
11. Click 'Save & View'
12. Observe the Winner in the Polls Livetable

EXPECTED RESULTS

In the Livetable is displayed '-', as there is no winner at the moment for this poll (the previous winner - 'Proposal2' was removed).

ACTUAL RESULTS

In the Polls Livetable, the previous winner ('Proposal2') is still displayed even after page refresh, although it was removed from the available proposals. However, if another remaining proposal is voted, the Livetable winner is updated.