Mill is reporting "SUCCESS" even before it finished

[lefou]

The following output is show, while Mill is still running.

> mill mill.idea.GenIdea/ 
1] resolve
app
assemble
buildsystem
checker
cloud
docker
...
1/1, SUCCESS] mill mill.idea.GenIdea/
Analyzing modules ...

Only after a long while later, the idea task finishes with more output:

Cleaning obsolete IDEA project files ...
Writing 1305 IDEA project files to /home/lefou/work/Comfis/comfis-mill-1/.idea ...
Writing misc.xml ...
Writing scala_settings.xml ...
Writing modules.xml ...
Writing scala_compiler.xml ...
Writing runConfigurations/Davinci_App.xml ...
Writing kotlinc.xml ...
Writing libraries/compile_resources.xml ...
Writing libraries/resources.xml ...
...

> mill --version
Mill Build Tool version 1.1.2
...

Also, no idea, why the resolve task output is shown.