I get different Search Dialog for multiple selection for the same transaction

S/4HANA 1709.

I am having a very strange issue.

When i run tcode CKMLCP directly and when i run it through SCMA, i get different search screen for multiple values.

CASE 1 : Running CKMLCP directly:

Then i want to select all materials from a material type that has more than 11k results:

And i get only the first 5000:

CASE 2: Running the same tcode from SCMA:

Doing the SAME steps as before i get a different selection screen where all items can be selected:

Really really strange.

Any ideas?

Thanks