Guild Wars 2

I’ve been seeing the words “Continuum Rift” floating just above the walking surface without anything there. I’ve only played my engineer today. Is this related to a current event?

In the Grove yes there is a current event which u can only see if you have finished HoT to avoid spoilers. The continuum rift you are seeing is part of a bug listed below, but it is often seen at the site of the current event listed above.

It’s a bug with one of the Mesmer’s skills.
https://wiki.guildwars2.com/wiki/Continuum_Split