Currently using the version for 1.20.1. I've noticed that the printer doesn't place slabs unless it's adjacent to a full block, so I need to manually bridge out with slabs to place them, making printer completely useless for slabs since it doesn't even place them. I've also noticed that it doesn't place walls (cobblestone walls specifically, not sure if that applies to everything) at all unless I place a wall adjacent to the wall in the schematic.

Also, please bring back the PrintinAir feature... It was super convenient for starting builds in the air without any support.

I'm using litematica for 1.20 with all the correct mods. Also using minihud and I have fabric installed correctly. The previous version I used (1.19.4) didn't have these issues. Maybe you could add it to the newer version to improve it further.

Thank you and great job with this mod!

I also see this issue. I think it mostly comes from walls being dependend on the block above which is not always the case, also annoying in survival.