Date & Time: Since Patch 5.4 hotfix update
Frequency: Always
World name: Masamune
Character name: Garo Zulan@Masamune
NPC name: Mikoto
Area and coordinates: Gangos x6.3 y5.9
Steps:
1. Talk to Mikoto after finished Patch 5.4 MSQ
2. Select "Tell me about tempering"
3. There will be 1 line that in Japanese instead of English.
This issue appear in PC and PS4.
Image: https://pbs.twimg.com/media/Ep1T-0gUwAMYlQb.jpg