Recently when I have tried to message someone on Facebook using my Skype, it doubles the message and then sends one and doesn't send the other. I've tried uninstalling and reinstalling Skype, disconnecting and then reconnecting Skype and Facebook, downgrading and upgrading, etc. It isn't a disaster and messages do send, but it's really annoying seeing a bunch of doubled messages. If someone could help I would appreciate it greatly. I have also attached a picture so you can see exactly what I mean.
There seems still to be problems with Facebook servers.
Nothing you can do about this issue.