message: only reset variables in parallel suites
diff: @@ -163,7 +163,9 @@ class PlaybackState {
  }
  @action.bound playNext() {
  + if (UiState.selectedTest.suite.isParallel) {
  clearVariables();
  + }
  this.currentRunningTest = this._testsToRun.shift();
  UiState.selectTest(this.currentRunningTest, UiState.selectedTest.suite);
  this.runningQueue = this.currentRunningTest.commands.peek();
  