Glowing SM Gate's
Saw this happen couple of times, reported it once. It seems sometimes, after taking a keep that had reinforced gates, the previous gates don’t disappear, and wooden gates spawn on top, while the ‘spawn’ effect is never removed, hence the shining and rubble particles. The model of the reinforced gates sometimes stays on top of the wooden gate, but without the collider, so once you take the wooden gate down, the reinforced model is still there, but you can pass it freely. Also, this is client-side bug, most likely caused by packets not arriving (that inform of object despawn), because I’ve seen people talking about a door being bugged this way, while it was fine on my screen.
The first time I saw all that fluff flying out of the gate,I thought a horde of enemy golems were on the other side.