Missing test run?

[anthony-cros]

I have:

$ cat build.sbt 
libraryDependencies += "com.lihaoyi" %% "utest" % "0.7.10" % "test"
testFrameworks += new TestFramework("utest.runner.Framework")

and

$ cat src/test/scala/HelloTests.scala 
package test.utest.examples
import utest._
object HelloTests extends TestSuite {
  val tests = Tests {
    test {  1  }
    test { "a" }
    test { throw new Exception("foo") }
    test {  2  }
    test { "b" }    
  }
}

and upon running sbt test, I obtain:

...
[info] welcome to sbt 1.4.7 (Oracle Corporation Java 1.8.0_161)
...
[info] compiling 1 Scala source to [...]/target/scala-2.12/test-classes ...
-------------------------------- Running Tests --------------------------------
+ test.utest.examples.HelloTests.0 1ms  1
+ test.utest.examples.HelloTests.1 0ms  a
X test.utest.examples.HelloTests.2 0ms 
  java.lang.Exception: foo
    test.utest.examples.HelloTests$.$anonfun$tests$4(HelloTests.scala:7)
+ test.utest.examples.HelloTests.3 0ms  2
[info] Tests: 4, Passed: 3, Failed: 1
[error] Failed tests:
[error] 	test.utest.examples.HelloTests
[error] (Test / test) sbt.TestsFailedException: Tests unsuccessful
[error] Total time: 2 s, completed May 28, 2021 1:56:11 PM

I would expect there to run five tests, not four. Am I missing something or is this an actual issue?

PS: I actually do care about not having to name my tests (at least not all of them)