1718665 - [AcroForm] Cannot "tab through" some fields as expected

Status: RESOLVED FIXED

(Firefox :: PDF Viewer, defect, P3)

Description

[Daniel Bodea [:danibodea]]

Attachment: poppler-753-0.pdf

Note

• When the user loads a specific PDF and attempts to tab through all fields, he will notice that some fields can't be reached.

Affected versions

• Nightly v91.0a1

Affected platforms

• all

Steps to reproduce

1. Launch browser.
2. Flip the pdfjs.enableXfa to true.
3. Load the attached PDF file.
4. Tab through the fields until you reach the 3 fields from section 2 (Social Security number previously assigned to the person listed in item 1).

Expected result

• Fields are correctly reachable.

Actual result

• Fields are not reachable.

Regression range

• This is not a regression.

Additional information:

• These fields are, in fact, reachable in incorrect order AFTER the last field from the document, so their order is incorrect.
• This issue does not occur in the case of the social security number fields from sections 9 and 10.

Comment 1

[Daniel Bodea [:danibodea]]

Attachment: incorrect focus order order of fields.png

Comment 2

[Calixte Denizet (:calixte)]

This form is not a XFA one but an Acroform one.

Comment 3

[Daniel Bodea [:danibodea]]

The issue may not be related to XFA forms, but the PDF should have some XFA because otherwise, it would not have reached our lists.
Reopening for Acroform. Unknown if an Acroform meta bug exists.

Comment 4

[James Teh [:Jamie]]

It'd e good to verify whether this happens in Acrobat Reader. If it does, it's an issue with the PDF rather than the viewer.

Comment 5

[Marco Castelluccio [:marco]]

(In reply to James Teh [:Jamie] from comment #4)

It'd e good to verify whether this happens in Acrobat Reader. If it does, it's an issue with the PDF rather than the viewer.

Daniel, could you check?

Comment 6

[Daniel Bodea [:danibodea]]

Of course! This issue does NOT occur in Acrobat Reader, only in Firefox.

Comment 7

[Daniel Bodea [:danibodea]]

The incorrect invalidity of this bug has created a lot of confusion.

Comment 8

[Marco Castelluccio [:marco]]

This bug is not invalid, but it is not related to XFA as the PDF is an AcroForm one.

Comment 9

[BugBot [:suhaib / :marco/ :calixte]]

The bug assignee didn't login in Bugzilla in the last months and this bug has severity 'S2'.
:calixte, could you have a look please?
For more information, please visit auto_nag documentation.

Comment 10

[Calixte Denizet (:calixte)]

Fixed by:
https://github.com/mozilla/pdf.js/commit/6b4c2464ad596c7ca1463e800fb927a48a62540d

The elements in the annotation layer are moved into the DOM depending on their position on the screen.