IntelliJ Comment with Line Comment does not work

Hi all,
I have been using IntelliJ for a few days now and I ran into this problem. I changed the shortcut configuration to Eclipse, but the command to comment code blocks doesn’t work. As you can see the command should be Ctrl + / but it doesn’t work.

I found a report that confirms the existence of this bug.

I solved it temporarily by changing the shortcut to Ctrl + Alt + 7. I was wondering if any of you had the same problem and how you solved it?

PS I am using the Windows version of IntelliJ Portable. The layout of my keyboard is QWERTY (see image).