Inverted vertical look

My first 3D game was the stand up arcade version of Star Wars. Firefox came out soon after, and for about forty years now, I treat the camera like it’s a real camera and invert look.
The last game that wouldn’t let me was The Walking Dead by Telltale, but it was doable noninverted, so I went ahead (and man was I glad I did. Powerful narrative in that game.)
Curiously, I thought it was a ‘permenant’ glitch in m’melon, but after playing Power Washing Simulator where I played non inverted for about five hours, went back to Overwatch, AND I COULDN’T PLAY IT. In a few hours, I undid decades of programming.
Took a few minutes for everything to feel ‘normal’ again.