The image below is the exact location. Server is NA, arsha server

It is just this location in particular, where standing inside the circle doesn't trigger the giants spawning event, while all other circles works as usual. This has happened to me twice in the exact same place.

I have tried walking in and out of the circle multiple time, jumping up and down, but the event just doesn't trigger in this one particular spot. Even killing more mobs around the circle and going back doesn't do anything to trigger the spawn.