folder collapsing
已回答
since the new version there is no folder collapsing

if I close library now, all the others should be closed as well!
But this is not the case!
The update of the folders does not take place either. In the 2017.3.3.0 it was still possible
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Here's the issue, I think we'll make this behavior configurable after all: https://youtrack.jetbrains.com/issue/IDEA-186081