User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:63.0) Gecko/20100101 Firefox/63.0 Steps to reproduce: I want my toolbar layout to be uniform across my desktop and 2-in-1 running Windows 10, as well as my certified refurbished mid-2012 or later iMac when I get one from Back Market maybe next year, to stay in touch with my cousin moving to the Chicago area in as many ways as I can since she loves Apple products and services. I also want all the icons and the order of the icons on the toolbar backed up in case I need to refresh my Firefox installation like I did the other day since McAfee WebAdvisor kept warning me about malicious redirects to clicknshare.net. I looked it up, and numerous articles all across Bing said that means it's time to refresh Firefox. Actual results: My add-ons appear in a weird order when I install Firefox or refresh Firefox on any PC or Mac. I always drag them to be sorted in alphabetical order in "Customize", from left to right with one exception, McAfee WebAdvisor to the right of the Library and Sidebar buttons to the right of the address bar on my Dell Inspiron 7558 2-in-1 I got in March of 2016 from dell.com. Expected results: Again, I want this as an option. Maybe there can be an eighth checkbox under "Firefox Account" in "Options" that says "Toolbar Layout" under what to sync with Firefox Sync.