How to dock nested dockers

Hello again.

I have a nested docker like in picture below.

I want to dock the docker panel to left. To get it to stick there.

If I try to do that, this happens. It isn't what I want.

How can I get it to dock the way I want? Nested dockers, snapped in place and not obscuring anything.

I can only snap it in place if it isn't nested.

With nested I mean two open dockers at same time in single pane.

It was possible to do so in earlier versions.

Thank you for reading.