Okay, so, here’s a thing.
(Credit: Umbre Fallenstar)
As you can see, not only do the gates themselves seem to be “flickering,” their surroundings are as well-- including distant nebulas in the background. This can’t be just something staying politely inside the gate. There’s some kind of filtering effect coming into being intermittently near the gates.
I hope it’s coincidence that it reminds me of Triglavian “weather.”