221364 - insertBefore(node, firstChild.nextSibling) not working as it should!?

Status: RESOLVED DUPLICATE of bug 26179

(Core :: DOM: Core & HTML, defect)

Description

[Andreas]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.0; sv-SE; rv:1.5) Gecko/20030925
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; sv-SE; rv:1.5) Gecko/20030925

See URL. The ambition is to insert a row following the first row in a table.

Reproducible: Always

Steps to Reproduce:
1.se URL
2.
3.

Actual Results:  
The row is inserted before firstChild, not before its sibling.

Expected Results:  
Placed the new row after the first one. Leaving Row1 always first!

Comment 1

[Andreas]

Attachment: Same file as URL, to test the error!

Same file as the URL (simple HTML and javaScript)

Comment 2

[Boris Zbarsky [:bzbarsky]]

The firstChild of the <tbody> is a textNode.  It's nextSibling is the table row.
 So everything is in fact working correctly...

*** This bug has been marked as a duplicate of 26179 ***