Neutropolis zone event.

[Lazwolf]

Went to Neutropolis to do the zone event, stood there waiting as the 'Next event starts' countdown wound down. The event started, then disappeared, with no popup either on the zone event or that it was finished and next one in x.x...' There was a zombie attack happening at the same time in the zone, which I suspect may have interrupted/overrode the normal zone event.

 

[srmalloy]

As far as I can tell, you can only have one 'event' happening in a zone at a time. I've seen it in Skyway when a team finished the penultimate mission of a Synapse TF, exiting back into the zone to find a zombie invasion, and Babbage never spawned. I don't know if they 'stack up' or not, but I've been ToTing in Kallisti Wharf several times during a banner event and had a zombie invasion pop up within seconds of the banner event ending.

[carroto]

Is that the Syndicate one?  I've seen the pop-up display break before.  If I remember correctly the event was still happening.  The display just didn't show up.  After defeating enough of the event mobs it showed up and the event worked as normal.