Guild Master changes to "member" randomly

[Arufonsu]

Can't reproduce WHEN this happens... the guild rank master (1) changes to rank member (5)
im not sure when this happens, it happened to a player and it happened to one gm i have as shown in the picture:

[asafgb]

Didnt happen to me,
how to make it happen again?

[Arufonsu]

it just happens randomly, no console error
like i said, Can't reproduce WHEN this happens... still need more feedback
it happened to a player and the gm in the picture.

[ronancpl]

There has a possibility someone changed the "Master" rank title to "Member". Note that "Little" player still owns Guild Note editing permission despite having "Member" as the rank title name. Hover the mouse over the rank title name, the original rank title name should display.

[asafgb]

Change the name of the ranks to 1..5
1
2
3
4
5

1. it shows 5???

2. after restart the server
   the player still was rank 5?

3. can you repoen new guild

i 3 hours at play and nothing

[Arufonsu]

like i said it happens randomly
and no, i don't have the master rights (can't invite, i click invite but nothing happens when i write the name, also i can't leave the guild because there's only one member)
also you can't disband the guild as "member" of the guild with the guild npc, because only the one with master rank can.
i fixed it by changing the rank from 5 to 1 in characters db table (is really easy to fix manually, but this shouldn't happen)

[ronancpl]

Should anyone have a way to replicate this issue reliably, or something that makes detection of this issue more clear, please post it here.