IntelliJ not recognizing packages in other modules

I have the following project structure (simplified). The project is a maven project, but when working with tests I build and run the tests in IntelliJ:

- Main project
- -  felles
- - - src
- - - - main
- - - - - java
- - - - - - e2e.utils
- - - - - - - HelperUtils.kt

- - cucumber
- - - src
- - - - test
- - - - - java
- - - - - - e2e
- - - - - - - kontakt
- - - - - - - - KontaktSteps.kt

In the file HelperUtils.kt (in the felles library) I have this method (among others):

package e2e.utils

fun sokerSenderMeldingISaken(sakTag: String, meldingsTekst: String) {
        val response = ApiResourceFactory.eDialogResource().registrerMeldingFraSoker(
            ScenarioState.getSakId(sakTag),
            MeldingRequest.builder().meldingTO(MeldingTO.builder().melding(meldingsTekst).build())
                .innsenderTO(
                    InnsenderTO.builder().fnr(ScenarioState.getSoknad(sakTag).soknad.sokere.sokerListe[0].fnr)
                    .navn("Fleske Svarten")
                    .build()).build())
    Assert.assertEquals("Should be 200 but was " + response.statusInfo, 200, response.status.toLong())
}

In the file KontaktSteps.kt I'm importing the HelperUtils.kt file and using the above method:

import e2e.utils.*

@Når("^søkeren i \"([^\"]*)\" har sendt meldingen \"([^\"]*)\"$")
fun sokerenIHarSendtMeldingen(sakTag: String, meldingsTekst: String) {
    HelperUtils.sokerSenderMeldingISaken(sakTag, meldingsTekst)
}

Now, when clicking around in the KontaktSteps.kt code, the method HelperUtils is found, and I can Ctrl-click it to the source.

However, when trying to build the cucumber module (either specifically or by running up the cucumber test), IntelliJ claims

/<REMOVED COMPLETE PATH>/saksbehandling/e2e/cucumber/src/test/java/e2e/kontakt/KontaktSteps.kt:334:21

Kotlin: Unresolved reference: sokerSenderMeldingISaken

Usually, this would mean that I haven't compiled the module felles, where the HelperUtils.kt file is located. But I have, several times, but no matter what I do IntelliJ insists that the file doesn't exist. Even though it clearly "knows" it's there, since I can Ctrl-click into it.

Running "mvn clean install" works fine. It seems that IntelliJ is the problem here.

Steps I've tried:

• Rebuilt the modules, again and again, in the correct order.
• Built the whole project with maven ("mvn clean install -U")
• Invalidated caches and restarted IntelliJ and rebuilt indexes and reimported all maven projects.

IntelliJ STILL insists that the method doesn't exist when building.

The strange thing is: I can still use any of the other methods in that same class, without getting any compilation errors. It's just not updating when I've added new code.

Also, if I create a new file in the same location in the felles module and compile it, I get the same problem from the cucumber project.

UPDATE: I've also tried removing the * in the import statement, and letting IntelliJ automatically add each specific import used in the module. In case that triggered some update of refereences. Same result.