I would not say it "fixed" the problem. It removed the _recommendation_ for parser implementations to use the regex `y|Y|yes|Yes|YES|n|N|no|No|NO|true|True|TRUE|false|False|FALSE|on|On|ON|off|Off|OFF` for parsing scalars as bools, it changed the _canonical_ presentation of bools from `y|n` to `true|false`, and it introduced the "schema" concept. It also introduced and recommended the use of the Core Schema, which uses `true|True|TRUE|false|False|FALSE` as the regex for inferring bools from scalars. But unsurprisingly, since using this schema is only a recommendation and not a requirement, many implementations elected to keep their backwards-compatible implementations that use the original regex.

So the Norway problem persists.

the recommendation was what caused the norway problem. it now strongly recommends not to do this, and it says that a Yaml parser should use the core schema unless instructed otherwise. going against the recommendation while saying that you're yaml 1.2 compliant feels like an issue that should be raised with the parser to me. I've never run into this issue in practice though.

is there a parser that says that it's Yaml 1.2 compliant that uses that regex? I don't know of one.