Shortly after the release of Firefox 78, Mozilla is rolling a minor update to the browser. Numbered 78.0.1, the update delivers a fix to the browser to resolve an issue with visibility of the installed search engines.
The change log states:
The upgrade package size is 7Mb.
My Firefox instance was affected by that bug. However, installing the 78.0.1 didn't automatically fix it. I had to Refresh Firefox after installing it.
The updated Firefox 78.0.1 ESR is also available.
The browser is now available for download from its official web site.
I have reviewed all the changes in Firefox 78 HERE.