Hi mbalanev
/templates/ja_blockk/html/mod_jacontentlisting/items/info.xml
Somehow, when you update new version of template, this info.xml file is not removed (while it should be) so it caused the issue.
I've removed it manually on your site and the 'Item setting' tab is showing fine now. Kindly check.
I'll report to the team to check with JAEM component and sorry for this inconvenience.