Frederic,
Sorry that you are seeing this issue.
It is not clear what exact problem you are seeing with the ComponentScan.
If you are seeing a similar problem as this one,then please try the suggestions and see if it helps.
Can you please give us some more details to help us investigate further?
1. Do you see any errors logged when running the project w.r.t ComponentScan? Please elaborate what exactly is not working with ComponentScan.
2. Any notable differences between the two projects you created? Is the Spring version different?
3. If possible, please share with us the zipped project to help us replicate the problem at our end. Also share with us the workspace log by clicking on the icon for ‘Export Log’ in the Error Log view, save it as text file and attach it here to help us look for any errors/exceptions logged.
4. If you are not working with the latest MyEclipse CI 2018.12.0, then please share with us the MyEclipse Version and Build Id details from Help > About MyEclipse section.
–Swapna
Genuitec Support