Describe the bug
Compiling projects with Lombok in IntelliJ 2020.3 EAP (Build 203.4203.26) leads to:

java: You aren't using a compiler supported by lombok, so lombok will not work and has been disabled.
Your processor is: com.sun.proxy.$Proxy32
Lombok supports: OpenJDK javac, ECJ

To Reproduce
Any project compiled in IntelliJ is affected.

Version info (please complete the following information):

• Lombok version: 1.18.12
• IntelliJ 2020.3 EAP (Build 203.4203.26)

Additional context

IntelliJ is now wrapping the ProcessingEnvironment in a Proxy. This lead to a problem for us at MapStruct (mapstruct/mapstruct#2215). While trying to fix that and testing with our examples I realized that our examples with Lombok are not compiling anymore.

For us at MapStruct it is quite easy to do this changes, don't know about you at Lombok

Thanks to @bjansen some more information about this:

https://github.com/JetBrains/intellij-community/blob/master/jps/jps-builders-6/src/org/jetbrains/jps/javac/APIWrappers.java

JetBrains/intellij-community@d6f2625#commitcomment-42898346

https://youtrack.jetbrains.com/issue/IDEA-250718

Lombok related IntelliJ issue (https://youtrack.jetbrains.com/issue/IDEA-252069)