Hello, @b.vallettedosia
Thank you for the English version of the project code!
Both problems were caused by an old eclipselink bug:
@MappedSuperclass is not weaved properly when it has no inheritors which happens for BaseEntitySoftDelete and BaseComment
They had a similar problem earlier and fixed it. Unfortunately, not all mechanisms have been fixed (e.g. valueholders).
As a workaround, you can add dummy entities to addon-commons module
Inheritance_bugs_workaround.patch.txt (2.0 KB)
We have an issue to investigate the problem more closely.
Regards,
Dmitry