Delete cookies on close not saving
I recently re-imaged my computer and reinstalled Firefox and I'm getting an issue where the "Delete cookies and site data when Firefox is closed" setting under Privacy & Security keeps getting re-checked after I close and re-open my browser. This is causing issues with logins being saved for me. At first I found this article,
https://support.mozilla.org/en-US/questions/1350469
but it looks like this doesn't apply to me as I don't have any custom settings for my history. I then tried to follow all the steps in this article,
https://support.mozilla.org/en-US/kb/how-to-fix-preferences-wont-save
and sadly nothing here worked either. I have even reinstalled Firefox just to be sure and I'm still having no luck. Personally I just ignored it for a while but I've now seen other users have the same issue (I work at an IT desk and I can confirm 2 others that have seen this same issue). Just to confirm I have no browser extensions installed and I have the latest Firefox updates. Any help would be greatly appreciated as I'm a bit too stubborn to switch over to using Chrome but it looks like I might have to if this keeps happening.