[3.02] From the Clouds to the Depths achievement rewarded after defeating Llengrath dragons

Hello,

I've just completed the Phylactery's Promise quest. I've noticed that the game rewarded two achievements instead of one. I went trough the list of achievements and noticed that "From the Clouds to the Depths" was initially awarded (after defeating the first dragon) followed by "Among the Moss and Peat" couple a minutes later (after the second dragon was defeated). Now, according to the achievement description one have to kill both the Sky Dragon and the Adra Dragon to be awarded "From the Clouds to the Depths". However in my playtrough I didn't fight with the Adra dragon at all. Even if I did this would not be the right place to award the achievement

Link to the PoE achievements on my Steam account:

http://steamcommunity.com/id/ptsekov/stats/291650/achievements/

Savegame before the battle:

https://onedrive.live.com/redir?resid=4DC07F73E10747BA!206325&authkey=!AO0hJEnx73lMhAU&ithint=file%2csavegame

Savegame after the battle:

https://onedrive.live.com/redir?resid=4DC07F73E10747BA!206324&authkey=!ABiJhokTJu9gOuc&ithint=file%2csavegame