Jonathan Kew [:jfkthame] Reporter
	Description • 9 years ago

<input> fields display OK in vertical writing mode.

However, if the <input> field has an associated <datalist>, the popup of possible completions displays horizontally, regardless of the writing mode.

See testcase: click in the input field, then type a character such as "g" and observe the popup of options that appears.

	Jonathan Kew [:jfkthame] Reporter
	Comment 2 • 9 years ago

Looks like the popup here is a XUL element, which implies that to fix this we'll either need to make the relevant XUL frames handle vertical writing modes, or re-implement the popup using HTML/CSS.

	Jonathan Kew [:jfkthame] Reporter
	Comment 4 • 8 years ago

This applies not only to pages with <datalist> but also cases where the browser is providing autocomplete suggestions based on previous form submissions, as described in the dup'ed bug.

	siqinbilige
	Comment 5 • 8 years ago

There is a sample page of datalist.
http://www.mongolfont.com/test/firefox/input.html