Bug fix incorrect sort in WP Query loop
Problem: Incorrect sort in custom loops use AJAX filters. Incorrect sort in custom loops by use AJAX filters. In my case sort correctly worked for one post type and incorrect for another.
Solution: Firstly, need to make sure, that your loop has correctly args. How I wrote above, my loop worked correct for one post type and already this fact was mystery for me 🙂 Secondly, check installed plugins. If you have Intuitive Custom Post Order plugin or similar plugins that change order of sort look for problem there. I didn't disable plugin, and just disabled sort for necessary post type here: Settings - Intuitive CPO.