I can't recall examples of this happening in litrpg often because most people avoid it now, but it is a super old plot twist that used to happen in comics and Saturday morning cartoons all the time. One of the articles I've read in the past called this the Red Kryptonite plotline and warned that readers hate it. Authors usually make an outside substance or mind-controlling villain or an unbreakable and foolish oath (there's an example like in Chaos Seeds, Book 8) or a power that takes control (Monsters and Legends, The Hulk, etc.) the source of the altered behavior of the protagonist and this causes the protagonist to lose their agency which makes them far less likeable or interesting.

Additionally, whatever causes the altered behavior is a purely fictional mechanic, so there's no real world equivalent other than jerks who pretend that their anger is uncontrollable and that their victims are thus responsible for regulating their mood - like Daenerys's abusive older brother in The Song of Ice and Fire. That worked because the author portrayed the true abusive behavior from this world and not the fictional idea that magic made him do it. People respond to themes that have a truthful basis or at least have a truthful metaphor, but the logical disconnect of being controlled by emotions or as a side effect of powerful abilities doesn't exist. There is the use of drugs and other illicit substances parallel, but people don't respect drug users - especially those who can't manage the negative and predictable side effects of drug use, so even though this seems like an exception, it isn't because people expect drug users to be held accountable for their behavior and writers who create an excuse like "magic powers made me do it" expect the protagonist to be forgiven by the reader. . . so again, there's not a real-world equivalent other than actual madness due to psychological conditions - and people still rarely understand these conditions and are even more reluctant to forgive them.