(CNN) — Stef Luthin squinted at her laptop screen. Something seemed off that January morning, but at first, she couldn’t pinpoint it.
Then, the 25-year-old social media marketing coordinator in Chicago noticed a small detail that surprised her. The default font in her Word document was different, even though she hadn’t done anything to change it.
“I was like, ‘Wow, I’m feeling gaslit by my own computer,’” Luthin says. “It happened out of nowhere. None of us really knew it was going to happen. And suddenly, it was there.”
On January 12, Luthin shared an eight-second video on TikTok portraying her confusion. At the time, she wasn’t sure if anyone would relate to her experience. It was only when the post racked up millions of views, and comments started pouring in, that she discovered she’d hit a nerve.
“I realized, ‘Oh my God. I am not the only one this must have just happened to,’” Luthin says.
Calibri — long …