I cannot /msg anyone, nor can I use /glist. These are two functions which I frequently use.
I suspect my operator status could be involved, or perhaps something bungee-chat side could be corrupted on my file. This could be related to the issues Alphaology has been experiencing, see T73.
I don't know why this is happening, and I'm not familiar with the bungee-side plugins, so I have no clue what the exact source is.