Forge problems

So Ive been working on a map in halo 5 forge, and im only using pallets. The standard object limit is 1600, but for some reason i can only place 861 pallets. If i try to place any more pallets, the counter goes up, but nothing actually spawns. Am i missing something? Or doing something wrong? Anyone else haveing similair problems?

If you have a twitter I would recommend sending a vid of this issue over to tom french, he’s a forge guy.