Good morning...  has there really been any recent progress toward an agreement about the marking of genitive for singular nouns that end in s? I keep finding disagreements and variations rather than consensus, mostly because style manuals differ and make exceptions and have their own particulars.

I'm personally stuck on the pronunciation more than the spelling; "That's Tek-səs flag" in answer to the question "Which flag is that?" just sounds awkward to me, as does "Those areˈJē-zəs disciples."

 Thank you...