June 20, 2018 Patch

{{Patch layout
 * source = http://www.thinkwithportals.com/blog.php?id=40875
 * source-title = Portal 2 - Update
 * before   = June 05, 2018 Patch
 * current  = June 20, 2018 Patch
 * after    = October 31, 2018 Patch
 * notes =

Portal 2
No patch notes

Undocumented changes

 * Fixed Puzzle Creator being unable to build puzzles.