Does Firefox and Firefox devedition syncing on everything
I begin to use firefox developer edition alongside firefox regular version. I've read some article that say if these 2 difference version using 2 seperate different profile, but it seems they're not. For example, when I change the theme to light for firefox and dark for firefox devedition, they always syncing each other so it use the theme the last set regardless where is set.
My question, is firefox and firefox devedition really using 2 seperate different profile? Can I use different setup like themes, addons for only one version? Where I can read the official documentation?
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Each version of Firefox must have its own profile folder because some things are not compatible.
You can use sync to share passwords, bookmarks, and history. Anything else may not be compatible between different browser versions or computer systems.
Type about:profiles<enter> in the address box.
How many profiles are listed?
Look at the profile that is in use. Remember its name. Now close that Firefox and open the other. Is the profile in use the same or different?
You can disable sync for your theme in two different ways:
(1) On the Settings page, Sync panel, do not Sync "Settings" at all. See: How do I choose what information to sync on Firefox?
(2) Use a hidden setting to disable Sync just for the theme. This is a little hard to find, but here are the steps:
(A) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button accepting the risk.
More info on about:config: Configuration Editor for Firefox. The moderators would like us to remind you that changes made through this back door aren't fully supported and aren't guaranteed to continue working in the future.
(B) In the search box in the page, type or paste services.sync.prefs.sync.extensions.activeThemeID and pause while the list is filtered
(C) Double-click the preference to switch the value from true to false
(D) Repeat on your other Firefox installation if necessary