Steps to recreate. There may be a simpler way to reproduce this but this is how I get it to happen.
- Browse to FBX file and choose it. This will automatically fill in a name for the Inventory Name.
- Click on the Materials Settings button.
- Click Cancel button in the Materials Settings to go back to upload screen.
- Change the name of the Inventory Name.
- Click the Material Settings button.
- Choose some materials and then click Save Settings to save your options and go back to upload screen.
- Click Upload.
The original name of the uploaded FBX shows up in inventory - not the name you changed it to.