I'm not sure what is causing it, but now I get a random layer appearing on top (sometimes covering holes) when I set my resolution from 0.15 to 0.1mm. I have rolled back two versions of the S3D and still receiving the issue.
Some other models are also receiving an extra 1-2 layers on top on some random areas when height is set to 0.15mm, even if the model is perfectly flat, but works fine when layer height is 0.2mm