Get super slow and stop responding sometimes when a project patches `class Object`

One of my projects keep causing rubymine to stop responding.

It happens after upgrading rubymine from 2018.x.x to 2019.3.1

- I can't go to declaration by Ctrl + left-click

- It takes more than 10 seconds for right-click window to appear (and it make rubymine to stop responding) after right-clicking on a variable.

- Right-click on blank area works well, though.

I found out that all it was because the following code. If I comment out it, everything works well.

class Object
  # arbitrary
end