A heads up to other guilds. If a player sets defense in guild wars and leaves sunday, you lose morale bonus

Today we had a player leave the guild who set a defense for guild wars and now it says that we are down a player for the max bonus for morale. (26/27)
Has anyone noticed this yet? As this is the first time we have had this happen to us.
Just giving you all a heads up, that if you have a player planning on leaving then either have them not set a defense or just stay until weekly reset.
@Jeto is this intentional?
Nemesis on playstation if you’d like to check it out.
Thanks