Strange behaviour on stepping over (multiple clicks required)

Hi Guys, 

I have a problem with debugging C# code with Rider. When I use step over I need to click "step over" button several times to get to the next line. It seems that simple instruction like setting a variable requires only one click:

UndoAvailable = true;

If I call a method I need to click twice:

CheckEnd();

However, this line requires four clicks:

CheckLines(slot.transform.position);

I just want to go to the next line.. Is it some kind of debugger feature that can be disabled? I don't want to create a ticket if it's "not a bug but a feature". 

I am using Rider 2017.3 to debug Unity 2018.1.

Thanks.