I can't find Preferences menu on 2019.2 (IU-192.5728.98)

Can you show the "IntelliJ IDEA" menu? 

https://i.imgur.com/cUsdVYJ.png

Sure~

You can workaround that by opening Preferences using Cmd+Shift+A (Find actions). 

And to fix the issue, try to run IntelliJ IDEA under JetBrains Runtime 8: 

https://intellij-support.jetbrains.com/hc/en-us/articles/206544879-Selecting-the-JDK-version-the-IDE-will-run-under

It's not showing any commands on Actions dialog.

And I closed IntelliJ IDEA and opened. But loading progress is not over.

I uninstalled all files. And Reinstall IntelliJ IDEA 2019.2. So it works well.

I think that there was problems about (open)jdk version.

Thank you

This happened to me today.  I had built another project that required JDK 11 and chose JDK 11 using the Choose Runtime plugin, then closed that project.  I opened up a JDK 8 project and it showed a popup asking me to use the built-in JDK, I clicked ok on that, then the Preferences menu disappeared and command + , only brought up the Maven side panel.  Command , did nothing.

Then I switched it back to Java 8 as recommended using Choose Runtime plugin and preferences menu came back.

Then, all the configurations showed a red x and opening Edit Configurations showed that there was no JDK selected, even though the pom.xml is set up for 1.8

I went to Project structure and chose Project SDK as 1.8, however, even though everything is built, nothing can be debugged.  Debug button is grayed out.

restarting intelliJ after that - it seems ok now maybe

It's not recommended to change JetBrains Runtime used to run IntelliJ IDEA, switch back to the default per https://intellij-support.jetbrains.com/hc/articles/206544879 .

JDK you are using for the project is not related to the runtime used to run the IDE itself.

JJones this was the exact scenario for me.  Using the JetBrains Runtime plugin messed up the short cuts: Cmd+Shift+A and Cmd + ,

I couldn't get to any preferences.  Well I still can't, but I'm going to try cycling through using the plugin again to see if it magically comes back.

If anybody finds that same issue: Still happens on IntelliJ 2021.1. There I don't have preferences for every JetBrains JDK after 11.0.10+9-b1379.1. I think the newer JDKs did work at some point but stopped late in the IntelliJ 2020.3.x lifecycle.

I set it back to the default - which is 11.0.10+9-b1341.35 - and it works again.

Please always use the bundled JetBrains Runtime unless instructed otherwise by JetBrains for the diagnostics purposes.

Serge Baranov Understood. Unfortunately, the "Choose Runtime" plugin page doesn't tell me that. It should!

Serge Baranov BTW: JetBrains told me to change the bundled runtime to fix IDEA crashes after MacBook sleeps.