tab vs. arrow keys with NVDA and Firefox

Hi all,
I have question regarding arrow keys vs. the tab key using NVDA and Firefox. When I use the tab key on three buttons (see screenshot below), NVDA announces each one individually as I tab and they are accessible using the enter key.  I believe this is called focus mode.  However, when using arrow keys it announces the heading level and a clickable list (see speech output below).  I believe this is called browse mode.  Using the arrow keys, NVDA doesn't announce each button individually and I cannot access the link with the enter key.  Is this a WCAG 2.0 violation since the buttons can be comprehended and accessed using the tab key, but not with arrow keys?
     [cid:image002.jpg@01D349A8.EF93A380]
NVDA Speech Output
Tab Key used:
PHYSICIANS  link
NURSING  link
ALL OPENINGS  link

Arrow Keys Used:
Banner banner landmark
heading  level 3
FIND A JOB
clickable
list
Code
<h3 class="open">Find a Job</h3>
<div>
<p>
<a class="btn btn-yellow" href="/jobseeker/physician" tabindex="0">Physicians</a>
<a class="btn btn-yellow" href="/jobseeker/nursing" tabindex="0">Nursing</a>
<a class="btn btn-yellow external" href="/jobseeker/allopenings " target="_blank" tabindex="0">All Openings</a>
</p>
</div>

I appreciate anyone's insight into this.

Regards,
Carmen

Received on Monday, 23 October 2017 14:51:58 UTC