So this is what my map looks like in the editor.



And this is what it looks like when I hit play.



Yes, the anchors are indeed touching the grounds, I checked.

There is a limit to 11 motor anchors in the gameplay.

A map can only have 11 motor anchors, the red ones that you used count double because they anchor 2 grounds at the same time.
If the map itself has no motors a shaman can make 11 objects that have a motor anchor. (Try to build some planks and attach more than 11 rotating small boxes, the 12th one just won't have an anchor, this is exactly the problem your map has.)

This is not a bug but rather a feature that was added to prevent
1. maps that cause players to crash because of excessive motor use and
2. troll shamans that cause players to crash because of excessive motor anchoring.

Only the first 11 anchors that are made will spawn, so it's dependent on their z-value.