Internal error, using pattern synonym as instance head

{-# LANGUAGE PatternSynonyms, DataKinds #-}

pattern A = True

class    F a
instance F A

when loaded in ghci it results in an internal error

% g internal.hs
GHCi, version 7.11.20151216: http://www.haskell.org/ghc/  :? for help
[1 of 1] Compiling Main             ( internal.hs, interpreted )

internal.hs:5:12: error:
    • GHC internal error: ‘A’ is not in scope during type checking, but it passed the renamer
      tcl_env of environment: []
    • In the first argument of ‘F’, namely ‘A’
      In the instance declaration for ‘F A’
Failed, modules loaded: none.
Prelude>