aria-activedescendant not reading out 1st option in JAWS

[stevjo14]

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Bug description:

aria-activedescendant doesn't read out/switch to the first option (index 0), and stays on index 1 (the second option) instead.
e.g. aria-activedescendant="ui-select-choices-row-0-1"

Link to minimally-working plunker that reproduces the issue:

https://angular-ui.github.io/ui-select/demo-multiple-selection.html (all of the examples do the same thing)
Screen Reader: JAWS v17
Browser: Internet Explorer 11

Version of Angular, UI-Select, and Bootstrap/Select2/Selectize CSS

Angular: 1.5.8

UI-Select: 0.19.8

Bootstrap/Select2/Selectize CSS (if applicable):

[Jefiozie]

Can you explain a bit more? I believe JAWS is software for reading a screen (at least that was my first google hit). How should it work and what should be adjusted to get this working?