i am also having same issues with the maryama set... placing roofs in particular with both maryama ans bossonian they will have a stability of 0 and will either dissapear immediately or after server restart. even had some bossonian walls show 0 stability even when they are conected to other pieces with more than enough stability.

@ChoZan, I would ask if you can join my discord and post some pics of the build and identify specifically which pieces were still losing stability? Sorry for the inconvenience.

I have generally gotten most of this under control. It is related to a base game bug that can cause build pieces to shift or gap, and if shifting is significant can cause stability loss.

Most has been resolved, known to still have issues with Murayama and Bossonian Inverted Corner Roof tiles (Not Murayama Shallow, just the normal sloped inverted corner roofs). I have some updates to those inverted corners but have some IRL stuff keeping me from working in devkit to finish, test and publish an update for likely another week or two.

Yeah there is a stability issue with Bossonian ceiling tiles for sure. I made a base where I used the Bossonian ceiling pieces supported by pillars instead of using foundations. A day later all my crafting stations and placable items lost stability and disappered from my base.

@gonukenhigh was it a new build or upgraded pieces?

Hey @chozan and @gonukemhigh, thanks for calling this out. It turns out the collision box on the Bossonian Ceiling (and Wedge) were ~4cm lower than normal, and the Northern Timber was ~1 cm too high. the total 5cm difference was more than the placeables could handle for stability checks it seems.

I have raised the collision box top surface for Bossonian Ceilings up 4cm to be in line with standard and in testing this was sufficient to solve the upgrade from Northern Timber to Bossonian stability loss. This adjustment will be in the next update of Northern TImber mod.