Hi anywhere-final,
Thanks for the information and demo of the problem.
I typically try to avoid these wild guess listings, as I think it is better to explore the file and provide a clear reply. Hence, I don't ask for videos or images; it is always the file.
If the selection is done, can you move the polygons up (P.Y) while the one in question stays?
For example, Select this as in your movie,
CV4_2025_drs_25_MOse_01.c4d
It looks like not all are selected, but one can move those. But moving it shows that it is selected. Switching on Normals in the Attribute Manager> Viewing Settings> View might help solve this secret.
I get the idea of the problem, but I have no idea about the geometry and its cause.
If you can share it via WeTransfer, I'm happy to take a look at it.
Here are some random tips; again, I'm unclear what the underlying problem is. (Considering that Polygons belong to the selected Object)
• Main Menu> Select> Select Connected (U~W)
• Attribute Manager> Modeling> Mesh Checking
• Main Menu> Mesh> Remove> Optimize. (U~O)
• Main Menu> Selection> Hide selected –– then explore how selectable the remainder of polygons are.
• Copy the model into a new project file, and explore again, while also checking the Main Menu> Window> Structure manager, set to polygons might help
• Select Point mode, then Shift-Click on the Polygon Icon. Any luck?
This list could go on much longer, but that is what I try to avoid here, and explore it based on a model
Enjoy your Sunday