1259731 - input with datalist dropdown picks wrong item

Status: RESOLVED DUPLICATE of bug 1242208

(Core :: Layout: Form Controls, defect)

Description

[zash]

Attachment: input-list.html

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0
Build ID: 20160319015032

Steps to reproduce:

An issue tracker with an <input> element with associated <datalist> for adding tags.
Having used this several times to set tags, Firefox remembers old items used.
Type some letters to narrow the list to a single item and click it.


Actual results:

A different item from the <datalist> is inserted set as value of the <input> element.

Similar to bug 1180827.


Expected results:

The value of the <input> element should be set to the selected item from the <datalist>

Comment 1

[Matthew N. [:MattN]]

Hi Zash,

Could you provide some more detailed steps to reproduce? I'm not seeing problems on Firefox 45.0.1. or Nightly on OS X. Could you also test in Safe Mode[1] or with a new profile? 

Could you also flip the pref formfill.debug in about:config to true and watch the output in the Browser Console[2] when you have the problem. Attaching that log with context around what you're doing would help as I wonder if the problem is bad autocomplete cache invalidation. The following log lines which may look like a problem probably aren't related:
* TypeError: this._recipeManager is null (bug 1167872)
* The character encoding of the HTML document was not declared…

[1] https://support.mozilla.org/kb/troubleshoot-firefox-issues-using-safe-mode
[2] https://developer.mozilla.org/en-US/docs/Tools/Browser_Console

Comment 2

[zash]

Attachment: formfill log

So, with a clean profile and formfill.debug = true, I have the attached (to the initial report) input-list.html on a site of mine.

First I write "Lorem-Ipsum" and submit the form.
Then I write "star", and pick "Status-Started" from the suggested list, but I get a different value in the field, "Status-WontFix"

Comment 3

[zash]

For the record, this is Firefox 45 from mozilla.debian.net on Debian Jessie

~$ apt-cache policy firefox
firefox:
  Installed: 45.0.1-1~bpo80+1
  Candidate: 45.0.1-1~bpo80+1
  Version table:
 *** 45.0.1-1~bpo80+1 0
        500 http://mozilla.debian.net/ jessie-backports/firefox-release amd64 Packages
        100 /var/lib/dpkg/status

Comment 4

[Loic]

Could you test with the official Linux version from Mozilla?
https://www.mozilla.org/en-US/firefox/all/

Comment 5

[zash]

Attachment: another formfill log, annotated

Reproduced with official release from tarball

Comment 6

[Loic]

It's fixed in 47+.