I've managed to fix in my project - the trick is t...

# ios

[Maurice Wingbermuhle]

I've managed to fix in my project - the trick is to not use the HMPP for iOS. So instead of this:

configure([iosX64Main, iosArm64Main]) {
      dependsOn iosMain
}

use this:

iosArm64Main {
    dependencies {
    }
    kotlin.srcDir("${projectDir}/src/iosMain/kotlin")
}

iosX64Main {
    dependencies {
    }
    kotlin.srcDir("${projectDir}/src/iosMain/kotlin")
}

If you have any dependencies in iosMain you need to duplicate them to the 2 specific variant. iosMain needs to still exist, but is allowed to be empty. This restores my compiler setup for native platform code, including code completion.
I am still using HMPP for JVM targets, and that still works without any issue.