Ran into this on our first Sanctum Somnium clear on Selo last Sunday. The 5th raid event the "Puzzle Room" has three puzzles, that all kind of work on the concept of a person in the central room coordinating an action with other puzzle participants in the side rooms. The second puzzle is basically a little mini version of the "Light's Out" puzzle or "Game of Life" style "turn the light's on/off" puzzle many of us have played. According to the Allakhazam write up: https://everquest.allakhazam.com/db/quest.html?quest=5295 this event is supposed to have a grid in the central room the organizer can use to monitor his team's progress on the puzzle. This grid didn't appear for us, because of the way it's designed you can still complete it without this, but it does make the event more confusing and difficult--especially for a guild learning it. We did a lot of investigating during the event and found that the grid still spawns as shown in the pictures on the Alla writeup, but it spawns at too low of a z-axis. You can go into first person camera and swim down the lava channels in the central room, look through the wall, and actually see the light grid spawned inside the lava. So at some point the spawn got messed up and fell through the floor geometry.
Reporting from Ragefire to say this is still an issue. One correction to note: It's the third puzzle's 4x4 grid that's spawning below the stage, not the second (Simon) puzzle. Workarounds aren't supposed to be solutions to broken event mechanics. Looking forward to this grid spawning in a visible area on the main platform again.
