Q: I Have Temporarily Solved My Safari Problem!

Since no word is forthcoming from Apple and most of the troubleshooting solutions entail wasting more time than I have wasted so far, and the Sierra installation broke the Java functionality of Adobe's Dreamweaver, I just made Firefox my default browser.

And I will downgrade the Java installation placed on my MacBook Pro by Sierra.

Apple could show a little consideration to the need for users to actually do work on their machines and properly test their software with standard applications people use to get work done.