The issue here is that Age of Production adds the planks recipe to the Tree Seeding tech. Simple Seablock hides/removes Tree Seeding, because normally the only thing it enables is Wood Processing (i.e. Wood -> Seeds) which is given to the player at the start of the game and therefore there's no reason to research it.
Rather than adding in specific compat for AoP, SS now detects if any other mods have added recipes to tech that it has disabled and gives those techs to the player to prevent them from being completely locked out. This fixes the issue for AoP and makes planks available at the start. It does mean the whole wood-processing AoP chain is available at the start instead of being locked behind Gleba. I haven't really played AoP but that feels like it's maybe OK given you're farming wood from the start in SS. If it's a big deal, I could add in specific compat for AoP to move the wood stuff to requiring Gleba.
