You mean the one where Windows doesn't have argv the way Unix does, and instead just has a single string that is interpreted slightly differently by each executable? That is a language making false assertions about how the underlying platform works, causing an impedance mismatch that is impossible to fix.
replyYeah, the one most languages (except for Rust)* decided was not a language problem and did not fix.
reply*should clarify, Node.js, PHP, and Haskell did ship patches. Python, Ruby, Erlang, and Go opted for documentation updates; Java went "won't fix."