Java compiler setting is keep resetting by itself

Hi! 

In our project some developers use Eclipse (crazy, I know 😄) and some IntelliJ. The thing is that IntelliJ crew has to set `Use compiler` option to `Eclipse` in `Build, Execution, Deployment > Compiler > Java Compiler`. that's fine, but it keeps getting reset to `Javac` by itself. Is that some kind of bug or am I missing something? 

I have a project with multiple modules, but this is a project setting I belive so it should be fine? 

Thanks in advance!