Inability to trade boar prime blueprint with Mastery Rank 12 (despite mastery rank requirement being MR 11)

[CaptainJLP]

The title says it all, was going to sell a boar prime blueprint as part of the set, and it was mastery locked for the person I was selling it to. He was mastery rank 12 - boar prime requires mastery rank 11. Here is evidence. Not sure what other mastery ranks it doesn't support.

Edited June 2, 2020 by CaptainJLP
Fixed up any mistakes with wording, also added other note.