Basically, when usernames are mentioned on Discord, they result in the user losing their connection if they're on IRC. However, if you add "@" before the username, they stay connected. I'm not sure if anybody else uses an IRC bridge and has encountered this strange behaviour too.
I started a thread over here: https://github.com/reactiflux/discord-irc/issues/338#issuecomment-346428310
Basically, when usernames are mentioned on Discord, they result in the user losing their connection if they're on IRC. However, if you add "@" before the username, they stay connected. I'm not sure if anybody else uses an IRC bridge and has encountered this strange behaviour too.