Indeed. I think it was Commie's release of Steins;Gate that had karaoke fx for the opening theme that literally blue-screen people's computers, because of the font they used triggering something in Windows GDI, so they had to rerelease a toned-down version.

unanimated's typesetting guide is still up, if anyone wants to see the insane amount of :effort: bored college kids used to put into subtitles: https://unanimated.github.io/ts/index.htm

BTW, ASS subtitles can be used with HTML5 videos in the browser using https://github.com/libass/JavascriptSubtitlesOctopus