Cannot enable font ligatures [Solved]

 Hello there,

 I've been trying to enable font ligatures in WebStorm with no success. First of all, I have follow this guide https://intellij-support.jetbrains.com/hc/en-us/articles/206544879-Selecting-the-JDK-version-the-IDE-will-run-under in order to get JB SDK.

I have downloaded and installed it without problem.

Next, I have typed Switch IDE Boot JDK in the help.

 Then, I have selected the JB JDK I just installed.

And I have clicked on Save and restart.

Finally, I have checked the Enable font ligatures option.

I have even tried with the bundle version.

But the result is always the same. I cannot see font ligatures.

Am I doing something wrong? Could someone help me out?

Regards,