This has been around since the coins released and not sure if anyone had reported it. But here are 4 bugs found with this: (guild contest coin)
In invasion bosses menu, the coins will take up the whole name of who owns the bot (except yours)
In war logs for defence/attack, the names of the defender and attacker will stack
In war, the names of both guilds and their scores do not fit within the borders
And lastly, the coin will be put on the wrong names of people in heists, even when multiple people have coins.
(Should be on Mighty Queen)
I know that these bugs are not a priority and are purely cosmetic, however they do become very annoying over time. Thank you @Polaris