If you have more than 10 objects, and choose 10 items per page on Table Options, after you add one more object or reload the page, the Items per page option on Table Options returns to 25.
The option previously chosen is not stored.
This happens both in the cluster and single mode
Steps to reproduce
Login as admin in Admin interface
Create 11 folders
In Sub items block, click in Table Options
Select the first option, just to display 10 items per page
Click in Close button
Click in Content Structure tab on top menu / Create one more object
Verify that on Sub items block, are being displayed more than 10 items
Click in Table Options button
Verify that the selected option is the second one, to display 25 items per page