I just updated FF on my desktop and laptop. On my laptop the little fox is missing from the Header after I restarted FF. (The one that we use to test our themes, that shows Preference, etc. I haven’t found any way to get it back. I made sure all my extensions were updated, etc. still can’t get it back. Anyone know how to get it back?
I just went to check an it says that Personas Plus is not compatible with this version of FF.
Hi @MaDonnasPersonas! I think the little fox you are referring to is the icon for the Personas Plus extension. Unfortunately, the icon went away when the extension became incompatible. 
We are working on migrating Personas Plus to WebExtensions APIs so it will be compatible with Firefox 57+. The developer is hoping to have a working prototype by the end of the quarter, but he needs a few things to be resolved in Firefox before moving forward.
Oh, wow…That is the only way theme designers can test their designs. I am going to “try” to save that tab I have open on my PC to my New Tab Page. Hopefully when I shut down it will work on a restart.
Thanks for the response.