Achievement "Behind Enemy Lines I" does not progress since 5.2

[Brokyl]

Date & Time: Started with 5.2 patch
Frequency: N/A
World name: Twintania
Character name: Brokyl Eir
Retainer name: Yhesa
NPC name: N/A
Monster name: N/A
Class/Level: Any
Party or solo: Any
In-game time: Any
Area and coordinates: Any Frontlines map
Housing: N/A
Steps:
1. Queue for Frontline match;
2. Win the match;
3. Be depressed that you can't get cool PvP mounts;

Final Notes: Since the introduction of the Onsal Hakair map this achievement cannot be progressed. The total amount of victories tracked will not increase regardless of map, grand company or match result. Same thing applies to "Behind Enemy Lines II".