Auto-complete doesn't properly work when using quotes

When trying to autocomplete a label with characters that need to be escaped (for example gitlab-ce~8864423 needs to be written as ~"regression:11.6") autocomplete won't work at all when you write the opening quote

This is annoying because autocomplete will also stop working as soon as you write a character that needs to be escaped, so for the gitlab-ce~8864423 example, you can't autocomplete it at all since when you write ~regression you'll get a list showing five options only () - when you type : to filter down more the autocomplete box disappears