welcome to the forum
Please see How to write your question to maximize your chances to find a solution for best results.
In particular, you haven't said what version of CubeIDE you're using.
But, yes - I have seen this issue going back to v1.13.0
As a workaround, you can just rename the .ioc file to have the same name as the project.
PS:
Another thing that never seems to work is the references to Debug Configurations (the .launch files).
I've tried renaming, various ways of exporting & importing, but always end up just having to recreate them from scratch.
A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.
