Users have reported that a domain reload isn't done when entering play mode, even though project is configured to do so. No solid repro case has been provided. For users having this problem, it even happens in an empty project.

Problem started with change related to moving domain reloads inside asset database. It was discovered that LockReloadAssemblies now got checked, when doing domain reload before play mode and would cause domain reload to be skipped if set.

Since there isn't a working repro case, this test can instead be used to verify the issue:

////
public class DomainReload
{
[UnityTest]
public IEnumerator LockedReloadAssemblies_DoesNotPreventDomainReload_WhenEnteringPlayMode()
{
AssetDatabaseExperimental.counters.ResetDeltas();

EditorApplication.LockReloadAssemblies();

yield return new EnterPlayMode();

Assert.AreEqual(1, AssetDatabaseExperimental.counters.import.domainReload.delta);

yield return new ExitPlayMode();

Assert.AreEqual(1, AssetDatabaseExperimental.counters.import.domainReload.delta);

EditorApplication.UnlockReloadAssemblies();
}
}
////

Above tests fails with: 2022.1.0a7, 2022.1.0a8 and 2021.2.0b12