As the header says, the event isn’t listed in the MyBlueprint panel.
Does it stop you from using it somehow? You can select it and gain access to its details.
Also, for bugs, go here:
It didn’t stop me from using, but when my college was trying to read the entire structure of the blueprint. it confused him and I think its a bug as it isn’t shown as it should be.
thank you for the link to properly report the bug.