Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

সহায়তা খুঁজুন

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

আরও জানুন

এই থ্রেডটি সংরক্ষিত ছিল। যদি আপনি সাহায্য চান তাহলে অনুগ্রহ করে একটি নতুন প্রশ্ন জিজ্ঞাসা করুন

Series of issues with developer tools

user193352328187258168552877469710436476497
user193352328187258168552877469710436476497
more options

Hi,

I have several issues with my FF that it's unusable for development. I'm giving it a third chance as I really want to keep it.

- CSS is not listed in the network tab - JS cannot be opened in debugger - Source maps partially or fully stop working (e.g. in CSS for some elements it shows the source, for some don't) - Disable cache in network checked still loads assets from cache

Not all issues from above happen at the same time. Restarting the app, refreshing the profile or opening in the private window shuffle the issues.

What I tried so far: - Refreshed Firefox (from the troubleshooting information) - Restarted normally (from about:profiles) - Reset my profiles - Tried without singing in to FF account - Deleted the app and reinstalled it

It is a local project running in Docker, but the same project works in Chrome. No changes have been made on my side. I'm a Chrome user and would really like to switch to Firefox.

Hi, I have several issues with my FF that it's unusable for development. I'm giving it a third chance as I really want to keep it. - CSS is not listed in the network tab - JS cannot be opened in debugger - Source maps partially or fully stop working (e.g. in CSS for some elements it shows the source, for some don't) - Disable cache in network checked still loads assets from cache Not all issues from above happen at the same time. Restarting the app, refreshing the profile or opening in the private window shuffle the issues. What I tried so far: - Refreshed Firefox (from the troubleshooting information) - Restarted normally (from about:profiles) - Reset my profiles - Tried without singing in to FF account - Deleted the app and reinstalled it It is a local project running in Docker, but the same project works in Chrome. No changes have been made on my side. I'm a Chrome user and would really like to switch to Firefox.

All Replies (1)

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 25 Contributor
more options

I don't use most of those features, but I can address one of them:

> CSS is not listed in the network tab

Firefox 79+ no longer revalidates cached CSS files against the server to pick up updates on a standard reload (F5 or Ctrl+r/Command+r). So if you don't see CSS files listed on the Network tab, that is accurate.

I created an add-on to overwrite the cache-control headers for CSS files as a workaround: https://addons.mozilla.org/firefox/addon/no-cache-no-store-for-css/

Also, since this forum focuses mostly on end-user issues, you could consider following up with the DevTools team on their forum over here:

https://discourse.mozilla.org/c/devtools