Resharper does not highlights unused private variables

I noticed that Resharper does not highlights unused private variables.

I set "Dead Code" color to magenta and create classes, methods and variables with different accessibility levels. In any cases except private variables it works fine.

• Recently I reinstall VS and Resharper but it not helped
• It is also reproduced on a newly created solution
• Alt+Enter menu does not offer any solution for this case (https://prnt.sc/12jc1w1)
  

I use VisualStudio 2017, Resharper 2019.3.4.

Is it possible to highlight also private variables?

Thanks in advance
Bob.