cannot save default Item layout template on content type or at article level

Hi,
I have created a new template by copying the default template and I am trying to assign it to a new Document Type I have created. I go to the Layout tab, I choose the template created by me in the Default Item layout dropdown and when I save it the field goes back to blog template for some reason. And on the types list view of the document types in the column Default Item layout the field is empty for this Document type.

The same happens when I try to use the newly created Document type and override the layout in the layout tab of the article. I chose the right one, but when I save it goes back to default.

Here is the page: www.nikolay100.com/en/blog/technical-stu...uum-cleaner-review-2

Please advise what is the problem in this case.

Thank you in advance.

hello we publish 3.1.3.3 i think correction is inside

Hello

yes in 3.3.1.2 the "type" form could be saved properly
please use 3.3.1.3

Yes, thank you. This fixed the problem.