I’ve been diving into using Probuilder to bring my 3D building models to life, but I’ve hit a pretty frustrating snag that I’m hoping someone here has a solution for. So, here’s the deal: I’ve got this intricate building model, and when I try to “probuilderize” the interior, faces start disappearing left and right. It’s not happening in simpler meshes, which makes it even more perplexing. I’ve spent hours tweaking everything I can think of, but I can’t seem to figure out why this is happening.
What’s really annoying is that I know it’s definitely Probuilder that’s causing the problem because as soon as I revert the conversion using prefab overrides, all the missing faces magically return, which is a relief but also a headache. I don’t want to have to rely on an external tool for mesh editing — I prefer to keep everything within Probuilder if possible.
I’ve done some digging through the settings, but I must be overlooking something crucial. It feels like there should be a way to prevent this face deletion during the conversion process. I’ve tried adjusting different settings in Probuilder and checking out the documentation, but nothing has helped stop the issue.
Has anyone else experienced this problem? If so, have you found any settings or workflows that can help avoid losing faces during the probuilderization process? Is there something more nuanced that I might need to look at in terms of my model’s geometry? Any tips or tricks you could share would be immensely appreciated, as I’m really trying to streamline my workflow without resorting to other software. I’m all ears!
It sounds super frustrating to be dealing with disappearing faces while using Probuilder! Here are a few things you might want to check out:
Lastly, if you haven’t already, you could try reaching out to the Probuilder community or forums for additional help. Sometimes someone has faced the same issue and might have a quick fix!
The issue of disappearing faces during the “probuilderize” operation usually occurs when the original mesh has complex geometry, overlapping edges, or non-manifold structures that confuse Probuilder’s internal representation. A good workflow is to first confirm if the mesh you’ve imported has proper normals, no flipped faces, and is free of duplicate vertices or overlapping geometry. Using Unity’s built-in mesh optimization tools or external initial clean-up tools (like Blender’s merge by distance and normals recalculation) can significantly help prepare your assets before bringing them into Probuilder.
Additionally, double-check your Probuilder conversion settings, especially the “Import Settings” under the advanced options, making sure that vertex merging or mesh simplification isn’t unintentionally causing mesh integrity issues. Sometimes setting vertex merging tolerances too high can mistakenly remove critical geometry, leading to unintended face loss. Lowering these tolerance values or disabling automatic optimization settings can often resolve this issue. If the problem persists, breaking the model into smaller pieces for conversion can often help pinpoint problematic geometry and mitigate face loss issues.