August 21, 2017 Patch

{{Patch layout
 * source = http://store.steampowered.com/news/31870/
 * source-title = Dota 2 Update - August 21st 2017
 * current = 2017-08-21
 * before = 2017-08-20
 * after = 2017-08-22
 * notes = * Fixed a server crash that could happen in the later phases of the Siltbreaker boss fight.
 * Fixed the exit door in The Odobenus Onslaught sometimes blocking players after the quest was already complete.
 * Small position fix to the Bans container when spectating regular games.

Siltbreaker
}}
 * are no longer purchasable.
 * An entry for a invisible dummy unit with true sight has been added.
 * Bosses are now invulnerable until they are aggro'ed.

Обновление от 21 августа 2017 2017年8月21日更新