1005791 - Absolute positioning containing block established by relative-positioned fieldsets is misplaced by <legend> child

Status: RESOLVED DUPLICATE of bug 942341

(Core :: Layout: Form Controls, defect)

Description

[nicolas.ternisien]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/34.0.1847.116 Safari/537.36

Steps to reproduce:


Coordinates count not from the top left corner of the block, but from contents (i.e. move downwards and to the right on size padding-top and padding-left.

Reproducible: Always

Steps to Reproduce:
1. Create a html file with this code in it:
------
  <fieldset style="width: 300px; height: 300px; position: relative; padding: 20px; border: 1px solid black">
    <span style="position: absolute; top: 0; left: 0">Test word</span>
  </fieldset>
------

See test cases at: https://bugzilla.mozilla.org/show_bug.cgi?id=450418

Note: Previous reporter was told to reopen this bug, which is what I'm doing right now.


Actual results:

The test word is shifted on 20 pixels at the left and from above.



Expected results:

The test word is in the top left corner of the block.

Comment 1

[:Gijs (he/him)]

Actually, the testcase I just created from your example: http://jsbin.com/wavuduho/1/edit looks correct to me in Firefox 29. It looks like this breaks because of the <legend> in the original attachment 333579 [details].

Comment 2

[Boris Zbarsky [:bzbarsky]]

This looks to me like a duplicate of bug 942341 (which has way more discussion on the matter).

Comment 3

[nicolas.ternisien]

Yes, I agree, the 942341 is clearly my case.