WebStorm/PhpStorm/IDEA: why does collapsed code expand?

Question

IntelliJ IDEA

Suppose I collapsed a block of code:

I press Ctrl + D (duplication) or I copy the collapsed block and paste it below and immediately the previous collapsed block expands itself. How to keep both blocks collapsed?

Answer 1

IMHO, "unmanaged regions" is a problem of many IDEs and is related to the control itself, and not to the implementation of logic in the IDE. I have observed similar things in Visual Studio, PowerGUI, SharpDevelop (construction #region ... #endregion). Despite the fact that the implementation of the control in these products is different (some from a third-party supplier, some - self-written).