IssueTracker

Studio Build: 3.2 canary 5 (but this happens since 3.0 at least)
Version of Gradle Plugin: 3.2 alpha 5
Version of Gradle: 4.5
Version of Java: 1.8
OS: Windows 10

Make any java class with a main and try to run it. It might work once, but then fail with: cannot find or load main class of xxxx
Process finished with exit code 1

If I modify the build.gradle, and sync then it runs. It will happen again after re-opening AS or other circumstances...

Version 1 of build.gradle:
    apply plugin: 'java'
    version = '1.0'

Version 2 of build.gradle:
    apply plugin: 'java'
    buildscript {
        repositories {
            jcenter()
            mavenCentral()
            google()
        }
    }
    version = '1.0'

One of the failing class, whether it has a package or not doesn't matter, it fails anyway:

import ...

public class test_class
{
    ...
    public static void main(String[] args)
    {
        ...
    }
}