[Vuejs]-Cannot run Grails 4 multi project build with Vue profile in parallel

instead of the server application running, the inline plugin that it
depends on is run instead for some reason?

When you run ./gradlew bootRun --parallel, every subproject that has a bootRun task in it will get run. That is desired Gradle behavior.

You said “instead of the server application running” which suggests something is wrong in the project, or there is a bug in Gradle. I would expect the server to run in addition to, not instead of, all the other projects that have a bootRun task in them.