Howdy all, I am coming across a strange interaction in which i previously saw results i had expected.

My Initial test: I am creating a mirrror in which i fracture and break (pretty standard)
I have a custom mesh which is just a simple rectangle with an inner face as a full reflective material encased in a glass material. This all is fine, maybe useless information.

The odd interaction that i am now seeing which i didnt see a week ago is that when enabling ''Optimize and close holes'' my mesh is distorted to oblivion although my orignal mesh is still as should be when disabled.

Little lost here as i havent updated C4D so i don't understand what has lead me to this outcome.

I have tried rebuilding in a fresh project and the interaction remains.
Additionally, I am noticing when using Voronoi fracture my normals are being inverted on segments which also is a new interaction.

Link to what I'm currently seeing in version 2025.2.1:
https://www.dropbox.com/scl/fo/4afxzlyr3y3qzt7e91lwu/AHk9PCxJghnHz1Hz7xnweTE?rlkey=fh3uc5l3lb7cgh7q0jao7j6ll&st=r8is2ya1&dl=0

I have added a simple project test in here too where the interaction is seen.

Very best,
J