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CSS downloaded multiple times

  • 5 cavab
  • 8 have this problem
  • 19 views
  • Last reply by Lynesth

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Hey there,

I've got an issue with Firefox 30 since a few days. On many websites I've checked, it actually downloads CSS stylesheets multiple time, even when it gets a 304 the first time. I really don't understand what's going on. Example on Mozilla's website (from console) :

GET https://www.mozilla.org/fr/firefox/new/ [HTTP/1.1 200 OK 997ms] GET https://mozorg.cdn.mozilla.net/media/css/tabzilla-min.css [HTTP/1.1 304 Not Modified 43ms] GET https://mozorg.cdn.mozilla.net/media/css/firefox-resp-min.css [HTTP/1.1 304 Not Modified 48ms] GET https://mozorg.cdn.mozilla.net/media/css/firefox_new-min.css [HTTP/1.1 304 Not Modified 54ms] GET https://mozorg.cdn.mozilla.net/media/img/firefox/new/header-firefox.png [HTTP/1.1 304 Not Modified 59ms] GET https://mozorg.cdn.mozilla.net/media/img/firefox/new/firefox-logo.png [HTTP/1.1 304 Not Modified 63ms] GET https://mozorg.cdn.mozilla.net/media/img/firefox/new/browser.png [HTTP/1.1 304 Not Modified 359ms] GET https://mozorg.cdn.mozilla.net/media/img/tabzilla/tab.png [HTTP/1.1 304 Not Modified 43ms] GET https://mozorg.cdn.mozilla.net/media/img/firefox/new/bg-noise.png [HTTP/1.1 304 Not Modified 49ms] GET https://mozorg.cdn.mozilla.net/media/css/firefox_new-min.css [HTTP/1.1 200 OK 159ms] GET https://mozorg.cdn.mozilla.net/media/css/firefox_new-min.css [HTTP/1.1 200 OK 99ms] GET https://mozorg.cdn.mozilla.net/media/css/firefox_new-min.css [HTTP/1.1 200 OK 77ms] GET https://mozorg.cdn.mozilla.net/media/css/firefox-resp-min.css [HTTP/1.1 200 OK 87ms] GET https://mozorg.cdn.mozilla.net/media/css/firefox_new-min.css [HTTP/1.1 200 OK 192ms] GET https://mozorg.cdn.mozilla.net/media/css/firefox-resp-min.css [HTTP/1.1 200 OK 196ms] GET https://mozorg.cdn.mozilla.net/media/css/firefox_new-min.css [HTTP/1.1 200 OK 132ms] GET https://mozorg.cdn.mozilla.net/media/css/firefox-resp-min.css [HTTP/1.1 200 OK 234ms] GET https://mozorg.cdn.mozilla.net/media/css/firefox_new-min.css [HTTP/1.1 200 OK 195ms] GET https://mozorg.cdn.mozilla.net/media/css/firefox-resp-min.css [HTTP/1.1 200 OK 185ms]


Tried at a friend's house, same result. Anyone else having this issue ? Has it already been reported ? Could it be just us ? :/

Kind regards,

Lyn.

Hey there, I've got an issue with Firefox 30 since a few days. On many websites I've checked, it actually downloads CSS stylesheets multiple time, even when it gets a 304 the first time. I really don't understand what's going on. Example on Mozilla's website (from console) : GET https://www.mozilla.org/fr/firefox/new/ [HTTP/1.1 200 OK 997ms] GET https://mozorg.cdn.mozilla.net/media/css/tabzilla-min.css [HTTP/1.1 304 Not Modified 43ms] GET https://mozorg.cdn.mozilla.net/media/css/firefox-resp-min.css [HTTP/1.1 304 Not Modified 48ms] GET https://mozorg.cdn.mozilla.net/media/css/firefox_new-min.css [HTTP/1.1 304 Not Modified 54ms] GET https://mozorg.cdn.mozilla.net/media/img/firefox/new/header-firefox.png [HTTP/1.1 304 Not Modified 59ms] GET https://mozorg.cdn.mozilla.net/media/img/firefox/new/firefox-logo.png [HTTP/1.1 304 Not Modified 63ms] GET https://mozorg.cdn.mozilla.net/media/img/firefox/new/browser.png [HTTP/1.1 304 Not Modified 359ms] GET https://mozorg.cdn.mozilla.net/media/img/tabzilla/tab.png [HTTP/1.1 304 Not Modified 43ms] GET https://mozorg.cdn.mozilla.net/media/img/firefox/new/bg-noise.png [HTTP/1.1 304 Not Modified 49ms] GET https://mozorg.cdn.mozilla.net/media/css/firefox_new-min.css [HTTP/1.1 200 OK 159ms] GET https://mozorg.cdn.mozilla.net/media/css/firefox_new-min.css [HTTP/1.1 200 OK 99ms] GET https://mozorg.cdn.mozilla.net/media/css/firefox_new-min.css [HTTP/1.1 200 OK 77ms] GET https://mozorg.cdn.mozilla.net/media/css/firefox-resp-min.css [HTTP/1.1 200 OK 87ms] GET https://mozorg.cdn.mozilla.net/media/css/firefox_new-min.css [HTTP/1.1 200 OK 192ms] GET https://mozorg.cdn.mozilla.net/media/css/firefox-resp-min.css [HTTP/1.1 200 OK 196ms] GET https://mozorg.cdn.mozilla.net/media/css/firefox_new-min.css [HTTP/1.1 200 OK 132ms] GET https://mozorg.cdn.mozilla.net/media/css/firefox-resp-min.css [HTTP/1.1 200 OK 234ms] GET https://mozorg.cdn.mozilla.net/media/css/firefox_new-min.css [HTTP/1.1 200 OK 195ms] GET https://mozorg.cdn.mozilla.net/media/css/firefox-resp-min.css [HTTP/1.1 200 OK 185ms] Tried at a friend's house, same result. Anyone else having this issue ? Has it already been reported ? Could it be just us ? :/ Kind regards, Lyn.

All Replies (5)

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Did you check the Network tab as well?

It is possible that there is some redirect with GET data appended to the URL that doesn't show in the Net log.

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Hey there,

I should have been more precise and tell you that it also appears in the network tab. See image attached for more infos.

On every site I look at, all those CSS are always retrieved after everything else.

Regards,

Lyn.

Edit: It also happens with cleared cache, when it doesn't get any 304 beforehand.

Modified by Lynesth

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Is the cache enabled and working?

You can check that on the about:cache page via the location/address bar.

In case you are using "Clear history when Firefox closes":

  • do not clear the Cache (Firefox will disable the disk cache in this case, see about:cache)

Note that clearing "Site Preferences" clears all exceptions for cookies, images, pop-up windows, software installation, passwords, and other website specific data.

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Hey there,

The disk cache was full, I cleared it but nothing changed.

I deactived everything in the developper tools settings, reactivated everything and all's back to normal now.

Though, I noticed that going in Stylesheet editor (or whatever the name is in english) can reproduce the bug I was having :

- Open developper tools - Go to Network, select only CSS, press F5, all is fine - Go to Stylesheet editor - Go back to Network, press F5

Regards,

Lyn.

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Hey there,

Double posting to add that I found another way to reproduce the issue (which actually adds to the previous one, increasing the number of retrieved CSS) :

- Open developper tools - Go to Network, select only CSS, press F5, all is fine - Inspect any element on the page (so that it show its css rules on the right) - Go back to Network, press F5

Regards,

Lyn.