This has been going on for a while now. PlayFabEditor Extensions will not update, nor will it update the SDK. Even when downloading the SDK or Extensions directly from https://api.playfab.com/sdks/unity. We have tried completely deleting everything, uninstalling everything, reinstalling, restarting unity, etc. It always seems to think the SDK is on an older version and needs to be updated along with the Editor Extensions.
I just tried doing this in an empty project and the same problem is occuring. Unity Version: 2018.3.11f1.