IntelliJ IDEA can't setup JDK

Question

I'm trying to setup JDK in IntelliJ IDEA and whatever I do, or whatever JDK version I select, nothing happens. The following situation remains:

So I told IDEA what JDK it should use, but it still asks me to setup a JDK. Is this a bug or am I missing something? Can I apply any workaround to make everything work as usual?

ADDITION

The steps which I go through setting up the JDK: situation before setting up:

the first step:

the second step:

the third step:

the situation after setting up JDK:

SDKs:

module settings:

Answer 1

File | Invalidate Caches is the first thing you should try in case of such issues.