560360 - Table sizing is rendered incorrectly intermittently when css has comments.

Status: NEW

(Core :: Layout: Tables, defect)

Description

[unimatrix.100]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3

Hi,

Please see the PHP source code file in the attachment. Once you've got it running, you'll have to force refresh the page a few times (for me it seems to always happen within 5 times), but you'll eventually see things like this (see attached image) - where there is a gap between two table rows. I can't quite put my finger on what is causing it, but it appears if the coments are removed from the css style, then this stops happening.

Reproducible: Sometimes

Steps to Reproduce:
1. Get the code in the above URL and run it from a php server.
2. Refresh until you see the above error.

Comment 1

[unimatrix.100]

Attachment: PHP file

Comment 2

[unimatrix.100]

Attachment: image file

Comment 3

[unimatrix.100]

Attachment: Image of problem

Comment 4

[David Baron :dbaron: (⌚️UTC-5, no longer working on Mozilla)]

Could be an incremental layout bug triggered by packet/buffer boundaries.  If it is, it's probably possible to write a more reliable testcase using the offsetWidth hack.

Comment 5

[Daniel.S]

Attachment: reduced testcase

(In reply to comment #4)
> Could be an incremental layout bug triggered by packet/buffer boundaries.  If
> it is, it's probably possible to write a more reliable testcase using the
> offsetWidth hack.

Here we go.