WhitespaceAround: "Invalid field access : tok"

[Gama11]

This one needs surprisingly much code to be reproduced.

#if true
@:forward
abstract Test(Int) {
    function foo(nullableArg:Null<Int>) {}
}
#else
import haxe.ds.ArraySort;
class Test {}
#end

./source/Test.hx:1: character 0 : Error: Check WhitespaceAround failed: Invalid field access : tok