Follow $.data.values.values['4qyjv03q'].flags.miscellaneous, and you'll find null. The sub-category is visible on the website, as if this flag was false. Other than that, I have not been able to determine anything about its behaviour, or the cause of it having this undocumented value.
Example: https://www.speedrun.com/api/v1/variables/6njq13jl
Follow
$.data.values.values['4qyjv03q'].flags.miscellaneous, and you'll findnull. The sub-category is visible on the website, as if this flag wasfalse. Other than that, I have not been able to determine anything about its behaviour, or the cause of it having this undocumented value.