Load of relation returning less members

I have a table that has a relation to another. It has only one record to which 22 records are related (visually counted, checked and rechecked on Data browser). However the code below is returning a list of only 10 of the 22:

Any ideas?

idDialog is obviously the column with relation on the parent.

The chosen 10 have no commonality that does not appear also in the “left behind” ones, except that they are the 10 (why this number?) first when one order the 22 guys by the “updated” field.

So, there is somewhere a setting for retrieving only 10 elements from a 1:n (1:10?) relation.

Solution found: “relations page size”