using ~ incorrectly crashes compiler (12 rc1)

[tx46]

let o = Obj.magic()

let skip = []
let props = Object.keysToArray(o)
  ->Array.filter(k => (~skip)->Array.includes(k))
  ->Array.map(k => (k, Object.get(o, k)))

https://rescript-lang.org/try?version=v12.0.0-rc.1&module=esmodule&code=DYUwLgBA9hC8EHkBGArAdAWwIYHMCWAxgBQCUAUGaJAM4DWeADnBANoC6l4EDATlA9WbIUIAmDS0QAT2oAVKAEEePLFKJRyECAFoAfEpVS0AMzzAwIHkVpxdEIgD86jEnoOq0eAHYFgAVwATEGprEk0dfWUPbAZrW3taABpEVFFxHHB1ZNowkiA

look under problems:

Unexpected Error
Ctype.Unify(_)