Only the text-size-adjust property is specified. The compat spec requires -webkit-text-size-adjust to be an alias. According to HTTPArchive data this has become a defacto standard and is required for web compat :-(. Chrome is about to ship it (prefixed and unprefixed). Can we just move the alias requirement from the compat spec to the proper home in the css-size-adjust spec?
/cc @miketaylr @tantek