Autocomplete changing a vote returns no matches for a valid delegate

[joerodrig]

Expected behaviour

On the "Vote For Delegates" modal, when you search for a valid delegate, add a vote to them, and then remove it, they no longer show up in the autocomplete. An error is returned stating "No matches". Refreshing the dialog doesn't fix this and a full app refresh is needed to return the autocomplete back to the intended state.

Actual behaviour

The delegate should appear in the autocomplete after they've been removed from your voting selection.

Steps to reproduce

• Go to the "Voting" tab
• Click "Vote"
• Search for a valid delegate(ie. "kippers")
• Select the delegate from the autocomplete list
• Click the "x" button next to the delegate
• Search for the delegate again
• An error will be returned stating "No matches"