Nope. Maybe I should restart Nightly again but...I just added Google back, and it was not as easy as I'd expect. The Firefox "add search engines" page is a mess and straight Google search was like 3 pages down.
Also I found another dark theme that is somewhat similar to what I had (but not official Mozilla) and installed that. All the default ones are still disabled.
Thanks.. Same here on every machine.. The hotfix update has been installed and add-on functionality is indeed recovered, but still i only have "amazon.com" as a pre-installed search provider and have been unable to restore them to their default settings without creating a completely new profile. Besides, i would be rather hesitant to install search providers from that list, imho.