IntelliJ Ultimate with WSL2/Ubuntu - Multimodule Maven Project Sync failing - other modules are not found

Hi Everyone, 

has someone else seen this behaviour? 

• IntelliJ 2021.1.3 Ultimate
• WSL2 Ubuntu 20.4 LTS
• Java 16 (OpenJDK inside WSL)
• Maven 3.6 (inside WSL) 
• Very simple Spring Boot project with Lombok. No other build plugins. 
• multimodule maven project (checked out in WSL folder) 

When I am trying to import the Project, I get several errors from the maven sync (screenshots below). IntelliJ fails to resolve all module dependencies (all the dependencies that can't be resolved are within the project root). In addition I get the error "WSL configuration issue: Ubuntu does not have configured maven". This will cause in either of two errors when I try to run or debug the application. I was not able to find any cause for which of these two errors happens:  

• application fails to start with the error being "could not find main class" 
• application starts but with an incomplete classpath and will crash with NoClassDefFoundErrors. (the elements missing on the classpath seem to be the transitive dependencies coming from the other modules) 

I have tried these things to fix the error

• project builds correctly using maven from the commandline
• I did run mvn package and mvn install from within the IDE - they work fine and run inside WSL. 
• When run on Ubuntu (no WSL), IntelliJ is able to correctly identify the other modules 
• verified that JDK, mvn and execution environment are within WSL
• deleted *.iml and .idea folder and reimported the project a couple of times
• invalidated caches 
• Triggered Build / Rebuild many times

Is there anyone who has had a similar issue?