Pet peeves?

Just read a fanfic building up on ettiquette and stuff like that. I'm so close to dropping it not because it's badly written or the plot's boring. It's because the writer uses "Pottah" whenever malfoy talks to Harry Potter. Other times they spell Potter right. Only when Malfoy speaks do they use that spelling.

I would've been fine if the genre was comedic or just the character being funny in the situation. But the writer decided to use it in a serious conversation and it's just putting me off.

As of the moment I have no other pet peeves but it did make me wonder what pet peeves others have? I mean besides the Ron Weasley bashing or any types of bashing