Is there a way to turn off automatically expand nested files in WebStorm?

In an Angular project, I added file nesting for spec files like this

This is super great because now I can have specs nested under the ts files like this and basically not bother me until I need it

I'm also having an active "Always Select Opened File" 

But the problem with this is that when I have opened a file that has a nested file, switch to another file, and then go back to it auto-expands in explorer which is very frustrating and I don't find a setting to turn off auto-expand nested files.