The breakpoints do show that they can be hit, but they’re displaced. I illustrate the problem in this post: Default Aurelia app scaffolding (first "makes" option) produces displaced breakpoints under Vite .
This problem telegraphs out to devTools as well, which tells me it has something to do with sourcemaps.
But for the life of me, I haven’t been able to hit upon a skeleton/launch config that solves the problem.