Hi Levente Farkas,

the description [ https://hibernate.atlassian.net/browse/HHH-10152] was
"After update from hibernate 4.3.10 to hibernate 5.0.0 schema update fails to add *cross schema *foreign key constraints."

so specific to cross schema but with MariaDb we have a more general FK problems, the one mentioned in this issue.
So solving this issue will solve the non cross schema FK but for cross schema FK it's necessary also to apply the what I mentioned in the [ https://hibernate.atlassian.net/browse/HHH-10152].