Difference in DuplicateRecordFields between 8.4 and 8.6

Wat.hs

{-# LANGUAGE DuplicateRecordFields #-}

module Wat where

data Record = Record { distinct :: String }

Foo.hs

module Foo where

import Wat (distinct)

showDistinct = show . distinct

Compiling with 8.6.4, installed from binary distribution:

> ghc-8.6.4 Wat.hs Foo.hs
[1 of 2] Compiling Wat              ( Wat.hs, Wat.o )
[2 of 2] Compiling Foo              ( Foo.hs, Foo.o )

Compiling with 8.4.4, installed from binary distribution:

> ghc-8.4.4 Wat.hs Foo.hs
[1 of 2] Compiling Wat              ( Wat.hs, Wat.o )
[2 of 2] Compiling Foo              ( Foo.hs, Foo.o )

Foo.hs:3:13: error: Module ‘Wat’ does not export ‘distinct’
  |
3 | import Wat (distinct)
  |             ^^^^^^^^

import Wat and import Wat (Record(distinct)) compile without errors in both 8.4.4 and 8.6.4.