presentational-children-focusable-absent
Roles with presentational children must not contain focusable content
Checks that an element whose role makes its children presentational (button, checkbox, img, option, radio, slider, switch, tab, ...) contains no descendant that takes a tab stop.
Applies to. Applies to elements whose semantic role is one of the WAI-ARIA roles defined as having presentational children (button, checkbox, img, menuitemcheckbox, menuitemradio, meter, option, progressbar, radio, scrollbar, separator, slider, switch, tab, plus doc-pagebreak and graphics-symbol from the DPUB-ARIA/Graphics-ARIA modules, which inherit the same trait). The role can be explicit (role="tab") or native (<button>, <meter>, <progress>, <option>).
Expectation. No descendant of the element is part of sequential focus navigation. The presentational-children mechanism removes every descendant from the accessibility tree, so a descendant that still takes a tab stop receives focus with no role and no name to announce.
Examples
<button>Save</button>
No presentational content that also happens to be focusable.
<button>Save<span role="button" aria-label="save options" aria-expanded="false" tabindex="0">▼</span></button>
The nested `<span>` carries its own interactive role and tab stop inside the button's presentational content.