For my characters, I notice that I run into the missgendering issue a lot for characters that are younger, like kids or teens.
My older characters don't have the issue unless I make it intentionally difficult to tell their gender or look like their opposing gender, which at that point missgenerding is kinda expected since it was an intentional decision.
The weird missgendering that does show up though that confuses me the most, usually deals with hair length for whatever reason. Like I'll have a girl with short hair being called he, or a guy with long hair being called she (even if have panels with them shirtless) It's such a weird problem since hair length is not gender defining in my culture... but is apparently gender defining for a lot of people reading my story??????