When given a stack trace in the REPL, the innermost call is displayed on top, and the outermost in the bottom. In error pop-ups in Atom/Juno, this order is reversed, with the innermost call in the bottom. It may seem like a small detail, but frequently confuses me when I’m inspecting the traces.

Brief discussion in https://discourse.julialang.org/t/stack-trace-reversed-in-juno/5199