I've got several Fluid apps for Amazon Web Services consoles (on different accounts).
The aws console saves UI preferences between sessions (e.g., which columns in a display do I want to see). I believe but am not 100% sure that this is stored in a cookie.
When I use firefox, this preference is saved between browser sessions. In the fluid app, it is not.
I found the directory
~/Library/Application Support/Fluid/FluidApps/AWS-DEV Console. It has a
cookies directory, which is empty. Other things are being successfully saved in this directory (
Bookmarks, DownloadArchive, webhistory).
At some point I discovered that Fluid was being sandboxed (I think; when I ran fluid apps i got a separate mounted pseudo-filesystem). The fluid apps had the finder attribute com.apple.quarantine set. I removed that with xattr and I no longer am in the sandbox. No effect on the cookies.
Fluid Version 1.8.6 (2331). I have purchased a license key, which is installed.
MacOS version 10.13.1 (17B48).
Is this a bug, or am I doing something silly?
edit: It appears that the preference is saved in HTML5 local storage, not in a traditional cookie. I'm guessing fluid apps don't implement this.