Julia has utterly standard lexical scoping—and always has. This issue has nothing to do with lexical vs dynamic scoping, it has to do with whether an assignment

Julia has utterly standard lexical scoping—and always has. This issue has nothing to do with lexical vs dynamic scoping, it has to do with whether an assignment in a loop clobbers a global (convenient but dangerous) or creates a loop-local variable (safe but sometimes inconvenient). Have you read the linked manual section on scope? It is very clear and explains the design considerations quite thoroughly.