This was the only thing I missed when I moved over from React 2 years ago. Vue's error messages are relatively useless, and they haven't ever improved much.
My stack traces for JS errors inside component methods often stop at "This component had an error", with no line numbers or context to indicate which method had the error.
I also have the same issue. I don't know what to do to resolve it. It's not a deal breaker but it would be nice to have it unwind the stack a little bit.