1297736 - [non-e10s] Tabulation inserted in text input if keydown event is listened for keyCode 9 with alert() in listener

Status: RESOLVED FIXED

(Core :: Widget: Win32, defect, P2)

Description

[vincent]

Attachment: html file to open in firefox.

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:48.0) Gecko/20100101 Firefox/48.0
Build ID: 20160817112116

Steps to reproduce:

Type a text in a input field and put the cursor in the text.
Go to the next field with tabulation.
A tabulation CharCode(10) is inserted in the text.

In the code of the page, there is a listener on keypress for keyCode 9 (TAB) and an alert() function in the listener.
preventDefault() on event doesn't modify the behaviour.
See attachement for the html file.



Actual results:

A tabulation is inserted in the text (input field) in addition to the navigation by tab key.


Expected results:

Only the navigation by tab key to the next field.

Comment 1

[vincent]

Attachment: testtab.html

Open the file in firefox and follow the instructions:
Enter text in the first or second input field and put the cursor inside the text. Then go to the next field with tab key. A tab will be inserted/added in the text.

Comment 2

[Tooru Fujisawa [:arai]]

Almost same bug as bug 1294536.
I confirmed it's fixed in the try build there.

could be just a dupe?

Comment 3

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

I think that for easier to find a bug which users to see, keep open this bug and close this bug when bug 1294536 is fixed.

Comment 4

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

I cannot reproduced with the latest Nightly build. Must be fixed by the fix of bug 1294536.