Username changing in guilds

Hello, I am currently in a guild and I want to change my ign, some people have told me that I will need to leave and rejoin the guild to stay in it and some people have told me otherwise, could I have some clarification on this?

 

There used to be an ancient glitch when username changes were initially released because the guild system was not prepared for it. If you changed your IGN while in a guild, you would be duplicated meaning you would take up two guild slots - AND you would never be able to leave the guild or be kicked. It was awful. Basically all guilds were plagued by this glitch, and some even ended up disbanding or going inactive because people would get stuck in the guild taking up two slots and go inactive, making it impossible to recruit new and active people. Hence guild leaders have heavily cautioned to not change usernames while in the guild historically.

The system has long been equipped for name changes, and this is no longer the case. If any remnant issues caused by name changes do exist, which I am not aware of, it should not be anything of permanence, ect.