Brief bug summary: Accessory crafting at meister level decayed back to craftsman level in the Reboot world.
More details:
On July 17 I reached meister level accessory crafting and did not craft anything further, leaving my mastery at 0.
On July 18 when I logged in 18 to 19 hours later, I checked my professions and saw that my accessory crafting level had gone back down to craftsman with 159995/160000 mastery but did not decay further while my meister alchemy mastery continued to decay. I consulted with my guild mates and their meister accessory crafting mastery had not decayed even after 24 hours, which I understand to be the intended behaviour on Reboot.
Edit: Mastery continues to decay and it appears my mates were mistaken. I had read various posts saying that accessory crafting did not decay on Reboot and assumed it to be true.
Steps to reproduce:
1. Reach meister level accessory crafting. Do not craft anything else, leaving your mastery at 0.
2. Wait 17 (?) hours until mastery is normally supposed to start decaying.
Character name: NippyNio
Character level: 223
Character job: Ice Lightning Mage
World name: Reboot
Date and time of the incident: July 18 at 11 AM Eastern