FULL PRODUCT VERSION :
java version "10-ea"
Java(TM) SE Runtime Environment (build 10-ea+32)
Java HotSpot(TM) 64-Bit Server VM (build 10-ea+32, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 10.0.15063]

A DESCRIPTION OF THE PROBLEM :
Type inference works for these cases:

Stream.of(1, 2, 3).map(j -> new Object() { int i = j; }).forEach(a -> System.out.println(a.i));
Stream.of(1, 2, 3).map(j -> new Object() { int i = j; }).collect(Collectors.toList()).forEach(a -> System.out.println(a.i));

But not for this one:

var list = Stream.of(1, 2, 3).map(j -> new Object() { int i = j; }).collect(Collectors.toList());
list.forEach(a -> System.out.println(a.i));


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
var list = Stream.of(1, 2, 3).map(j -> new Object() { int i = j; }).collect(Collectors.toList());
list.forEach(a -> System.out.println(a.i));
---------- END SOURCE ----------