Debugging is not working for a Grails 3 script

What steps will reproduce the issue?
1. Write a groovy script
2. Set a breakpoint
3. Create a new Run/Debug configuration with a command line "run-script scripts/HelloWorld.groovy"
4. hit the debug button

What is the expected result?
The debugger stops at the breakpoint

What happens instead?
The script runs until the end, the breakpoint is ignored

I attached the Dummy Grails application and the idea.log

---

*Imported from [IDEA-190144](https://youtrack.jetbrains.com/issue/IDEA-190144) · Type: Bug · Votes: 0*
*Comments, attachments, dates and reporter are not part of the export — follow the link above for the full history.*

Start with the attached Dummy Grails application and idea.log, then reproduce the issue using a Run/Debug configuration with the `run-script scripts/HelloWorld.groovy` command. Trace the debug launch path for the Groovy script and verify that execution stops at the configured breakpoint instead of running to completion.

Written by the indexing model from the issue text.