Current theories, in order of likelihood:

1. You can't teleport to an encounter space without having been there once previously.
2. Encounter spaces are power level gated, and I wasn't high enough yet.
3. The panels have to be input in a certain order (seems unlikely, since it's pretty clearly designed to allow for multiple team members to help set up the pattern at once).
4. I got the pattern wrong. This one is dead last because I checked it several times before submitting. It wasn't wrong.

So a hidden room in the raid has been discovered that grants “wishes”. You also get triumphs. Getting to the room can apparently be done solo (I’m working and haven’t tried) so I consider this equivalent to getting the first chest in the Crotas End raid in D1.

https://www.reddit.com/r/raidsecrets/comments/9hgx6p/you_can_now_make_wishes_in_the_hidden_button_room/?st=JMB9NDO3&a...

Patterns have been seen all around the system but no one knew what they were for before now.

Of particular note so far: a birthday party wish that grants confetti and celebration sounds upon precision kills. In the raid. Sounds familiar?

You can also use the wishes to teleport directly to specific encounters within the raid (cool!). This means you can reach at least 2 of the raid chests, solo, without needing to do any combat.

https://www.reddit.com/r/raidsecrets/comments/9hgx6p/you_can_now_make_wishes_in_the_hidden_button_room/?st=JMB9NDO3&a...

Patterns have been seen all around the system but no one knew what they were for before now.

Of particular note so far: a birthday party wish that grants confetti and celebration sounds upon precision kills. In the raid. Sounds familiar?