IntelliJ/WebStorm "Smart" Indenting / Tab on newline

So this seems like quite a trivial question. At the moment when declaring an object, and assigning values as such:

let object = {
    myValue: "some value" <--- Now typically here I would hit <comma> <enter>
}

What use to happen:

let object = {
    myValue: "some value",
    anotherValue: "some other value"
}

What is happening now:

let object = {
    myValue: "some value",
        anotherValue: "some other value" <--- What is with this additional tabspace?
}

It's driving me nuts, and it's such a weird and specific thing to explain, google to no avail!

Every time I declare object properties I have to <shift> <tab> this additional space or <backspace>. Seriously driving me nuts, completely destroys my grove. This has been included in the new WebStorm update (2017.2).

Where is the setting to change this? What do I call this?