Oman getting Zanzibar as vassal

[Sute]{h]

Oman seems to be getting the event: "Zanzibar is a sattelite" even though they no longer owns Zanzibar and Zanzibar isn't a existing nation. In my current game they are a part of my glorious Prussian nation. Might I suggest adding a trigger to the event requiring that Zanzibar exists? The event ID is 38502. Perhaps the following event ID 38503: "The Zanzibar Question" should have a trigger requiring that Zanzibar is actually an Omani sattelite?

Ps. sorry if this has already been reported, but I couldn't find the bug lists anywhere. o