output seems error when input an multi-material surface mesh(diffirent material share an interior face)

[xmyhhh]

hi~ thanks for sharing your work However , I meet some trouble when trying with my mesh

The mesh input I used is a multi-layered geologic body, as shown in the image below, which has five layers in total, stacked like a hamburger (meaning five materials from top to bottom, shareing four inner surface).

for surface outside, I adjust the normal to point the outside domain, for shareing surface inside, I adjust the normal to point the mesh center reversed as shown in the image below

The problem is, there is some tet is missing inside my input mesh and some pop outside my input mesh,as shown in the image below(green are my input mesh edge and blue are output mesh edge)

the command I use is "FloatTetwild_bin.exe --input domain_merge.off --output domain_merge_out.mesh" I also attach my input file here for debug purpose if someone need! download link

[xmyhhh]

sorry I shold put this issue in fTetWild Repository not here, so close it