My friends and I (playing on Ps4/ps5) did all the steps and placed the 3 alters in the 3 fissures and we prototyped the Incomplete Experiments but are unable to place it on the mysterious energy fissure. As you can see in the picture attached, there is nothing in the way. And we can't move the 3 alters because they cannot be moved after they are placed (not sure why). Anyway, I saw that a couple other players are seeing the same issue on Twitter but they were told that this cannot happen in the latest patch so I attached a screenshot as proof. I hope this gets fixed because we did A LOT of work to get to this point.
1. Place Alters in fissures (our fissures are kind of close to each other but the game INSISTS that they be within 5 tiles)
2. Try to place Incomplete Experiment
3. Can't place it