I have the same issue after a year of ownership. Tried sanding and painting with appliance paint and the rust came back.
Now it has spread from the bleach fill area to the practically the entire tub and hinges. Thought I was the only special one with this issue only to find out I'm not alone. LG will only pay attention if someone gets hurt not your clothes. But it's still a defective product.
Reminds me of my grandma's 1960's machine that rusted. Didn't think we were going backwards but LG has shown us the way. I won't be buying/using another LG washer (even if they gave me one) due to this rusting issue.
I will stick with GE Profiles. Never an issue with them.
Review about: Lg Electronics Washing Machine.
Reason of review: RUST.
Monetary Loss: $500.
Preferred solution: Let the company propose a solution.