I installed this mod along with the one I mentioned before, and after testing them for a while, I noticed that some of the mod’s slabs (mainly the wood and leaves) are not affected by the Additional Placements mod and are therefore only placed in their traditional form. While reviewing the files, I observed the following error message (the one sent is just one of the 32 blocks generating the error):

[Render thread/WARN] [Additional Placements/]: Generation type additionalplacements:slab cannot generate for new_slab_variants:oak_log_slab as it already contains the following properties that would be added:
[Render thread/WARN] [Additional Placements/]: [axis]
[Render thread/WARN] [Additional Placements/]: Add it to the blacklist inside additionalplacements-startup.toml to stop this message from appearing in the future.

Curiously, this does not happen with the leaves, only with the wood and all its variants in the mod.

For additional information, I am using version 1.20.1 and have installed the latest version of both mods released for this version of Minecraft.