"multiple instances" error when removing value during unit testing

TestDataStore.kt

import android.content.Context
import androidx.datastore.core.DataStore
import androidx.datastore.preferences.core.PreferenceDataStoreFactory
import androidx.datastore.preferences.core.Preferences
import androidx.datastore.preferences.core.edit
import androidx.datastore.preferences.core.stringPreferencesKey
import androidx.datastore.preferences.preferencesDataStoreFile
import androidx.test.core.app.ApplicationProvider
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.ExperimentalCoroutinesApi
import kotlinx.coroutines.SupervisorJob
import org.junit.Before
import org.junit.Rule
import org.junit.Test
import org.junit.runner.RunWith
import org.robolectric.RobolectricTestRunner

@ExperimentalCoroutinesApi
@RunWith(RobolectricTestRunner::class)
class TestDataStore {
  companion object {
      private val DATASTORE_KEY = stringPreferencesKey("DATASTORE_KEY")
  }
  
  @get:Rule
  val testCoroutineRule = TestCoroutineRule()
  
  private lateinit var dataStore: DataStore<Preferences>
  
  @Before
  fun setup() {
      val context = ApplicationProvider.getApplicationContext<Context>()
      dataStore =
          PreferenceDataStoreFactory.create(
              scope = CoroutineScope(testCoroutineRule.testCoroutineDispatcher + SupervisorJob())
          ) {
              context.preferencesDataStoreFile("preferences")
          }
  }
  
  @Test
  fun test() {
      testCoroutineRule.runBlockingTest {
          dataStore.edit { it[DATASTORE_KEY] = "team" }
  
          dataStore.edit { it.remove(DATASTORE_KEY) }
      }
  }
}