783606 - CSS fails to load on first-load of Twitter (shift+reload fixes it)

Status: RESOLVED DUPLICATE of bug 771832

(Core :: Networking, defect)

Description

[u279076]

Attachment: Screenshot

I've hit this bug a few times intermittently over the last few months and this time I was lucky enough to have Error Console open when it happened. I'm attaching a screenshot which displays the error and the UX. 

Basically when loading Twitter for the first time it fails to load a JS file containing stylesheet information. Reloading the page does not resolve the issue, but SHIFT+Reload does. I've hit this on several other sites in the past so I don't think it's specific to Twitter.

This bug is so intermittent (I probably hit it once every couple of months), so I'm not expecting it to get "fixed" anytime soon but I thought I'd file it anyway. There's probably a dupe of this bug somewhere too. Hopefully this is somewhat useful.

Comment 1

[Boris Zbarsky [:bzbarsky]]

Over to networking.  Note that the error is about a _JS_ file not being loaded, not a CSS file...

Patrick, does twitter use SPDY nowadays?

Comment 2

[u279076]

(In reply to Boris Zbarsky (:bz) [In and out Aug 1 - 10, out Aug 11-20] from comment #1)
> Over to networking.  Note that the error is about a _JS_ file not being
> loaded, not a CSS file...

Yes, but I assumed they are loading their stylesheets from within that JS file. I wasn't able to check so I guess I could be wrong about that.

> Patrick, does twitter use SPDY nowadays?

AFAIK, yes, it does.

Comment 3

[u279076]

(In reply to Anthony Hughes, Mozilla QA (:ashughes) from comment #2)
> > Patrick, does twitter use SPDY nowadays?
> 
> AFAIK, yes, it does.

BTW, I'm using Firefox 14.0.1 on Ubuntu 12.04 64-bit

Comment 4

[Patrick McManus [:mcmanus]]

(In reply to Anthony Hughes, Mozilla QA (:ashughes) from comment #3)
> (In reply to Anthony Hughes, Mozilla QA (:ashughes) from comment #2)
> > > Patrick, does twitter use SPDY nowadays?
> > 
> > AFAIK, yes, it does.
> 

https://si0.twimg.com does not appear to run spdy - some of their subresources on cdns aren't spdyized.. so its something differnet.

might be a dns timeout or something like that from a cold cache.

Comment 5

[Patrick McManus [:mcmanus]]

michal, is this a dup of bug 771832?

Comment 6

[Michal Novotny [:michal]]

It seems so.