Proper tagging on upper case vs lower case

Filed an Issue ActivityPub for WordPress. (GitHub)
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Not quite sure what may be causing it, but I’ve noticed on my site that I get a properly tagged but don’t get it properly tagged when I use lower case . Is this to be expected or something in the line of a regex issue?

Examples: [1] [2]

📺 “The Late Show with Stephen Colbert” Jake Tapper/Amy Sedaris/The Claypool Lennon Delirium | CBS

Watched "The Late Show with Stephen Colbert" Jake Tapper/Amy Sedaris/The Claypool Lennon Delirium from CBS
With Stephen Colbert, Jake Tapper, Amy Sedaris, Claypool Lennon Delirium. Journalist Jake Tapper; actress Amy Sedaris; Claypool Lennon Delirium perform;

📺 “60 Minutes” The Pavarotti of Pasta/Whisky Island/Paul McCartney | CBS

Watched "60 Minutes" The Pavarotti of Pasta/Whisky Island/Paul McCartney from CBS
Directed by Rob Klug, Alicia Tanz-Flaum. With Lesley Stahl, Massimo Bottura, Lara Gilmore, Steve Kroft. "The Pavarotti of Pasta" rebroadcasts a segment on popular Italian chef Massimo Bottura. "Whisky Island" rebroadcasts a segment on the Scottish Island that produced some of the world best single-malt scotch whiskey. "Paul McCartney" rebroadcasts an interview with the former member of the Beatles.

📺 “The Good Doctor” Faces | ABC

Watched "The Good Doctor" Faces from ABC
Directed by Allison Liddi-Brown. With Freddie Highmore, Nicholas Gonzalez, Antonia Thomas, Tamlyn Tomita. Dr. Andrews tries to convince a grieving mother to donate her teenage daughters face to another young girl whose face was horribly disfigured in an accident. Shaun spends a vacation day with Dr. Glassman and they end up on a road trip.

📺 “The Good Doctor” Xin | ABC

Watched "The Good Doctor" Xin from ABC
Directed by David Straiton. With Freddie Highmore, Nicholas Gonzalez, Antonia Thomas, Tamlyn Tomita. Dr. Murphy, Dr. Reznik and Dr. Kim treat a woman who has autism and a delicate brain condition; Lea and Shaun work to figure out their friendship and roommate status.

🎞️ BlacKkKlansman (2018) | Focus Features

Watched BlacKkKlansman (2018) from Focus Features
Directed by Spike Lee. With John David Washington, Adam Driver, Laura Harrier, Topher Grace. Ron Stallworth, an African American police officer from Colorado Springs, CO, successfully manages to infiltrate the local Ku Klux Klan branch with the help of a Jewish surrogate who eventually becomes its leader. Based on actual events.
An interesting, but up-the-middle story. Of course despite the general blandness, everyone should really watch it at least once.

Watched as a rental on DirecTV