312396 - Shows the invisible "Skip Navigation Links" in ASP.NET 2.0 asp:menu when on a cluster

Status: RESOLVED INVALID

(Core :: Layout, defect)

Description

[Donald Croswell]

User-Agent:       Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50215)
Build Identifier: 

I have built a site in ASP.NET 2.0. I tested it in my development environment 
and in my test environment with no problems. Then, when I upload my test 
website to the development boxes (all running same files and OS with same 
config, only differnce is they use NLB:Network Load Balancing / Affinity) When 
I browse the site, sometimes firefox will display the "Skip Navigation Links" 
which has 0 height and 0 width as a link. If I browse the individual boxes 
through IP, then the sites render correctly, but if I browse the IP of the 
cluster, it shows the "Skip Navigation Links" table.

Reproducible: Sometimes

Steps to Reproduce:
1. Browse to http://www.teacherscreditunion.com.au
2.Keep hitting refresh until the main navigation menu shows the "Skip 
Navigation Links" as a button
3.

Actual Results:  
The main navigation is distorted with the "invisible" alt tags.

Expected Results:  
The "Skip Navigation Links" should not show and is for blind people with text-
readers to easily navigate past huge cascading navigation menus.

I will test this with the Network Load Balancing switched off to see if there 
is any affect

Comment 1

[Phil Ringnalda (:philor)]

The "misrendering" happens when we request a URL for an image like
http://www.teacherscreditunion.com.au/WebResource.axd?d=K-eNqFFTDTLFw_l1vbU_6pCDoMX32VIM82js2vHkVgY1&t=632628110847812500
and every few times instead of the image we get a 302 redirect to
/errors/errorPage.aspx?aspxerrorpath=/WebResource.axd which compounds the pain
by returning a 200 OK rather than whatever error (404?) it should return. Don't
hesitate to reopen if you can see somewhere that we're at fault in that, but it
looks to me like you either have a broken or missing WebResource.axd on one
server, and broken error handling behind it.