Hello Jerome, thank you for the query. This is an issue unfortunately. The projects are not covered by the migration to openLCA 1.11. However, when you create a new project and add the product systems (which may have been created in previous versions) to it, it will work without any problems.
Try creating a new project for the PC water bottle in v1.11 and adding the existing product systems, you will see that it works just fine.
Reach out to us again if you have any further issues!