Join not waiting for if/else activity to complete.

In the below workflow, the join does not wait for all of the if activities to complete, even though the join mode is set to Wait All. All of the run workflow activities are set to block. It seems as soon as one of the If activities returns Done, the join thinks they are all done. You can see in the second screen shot that they all say done, even though all are still running except 1. Using the latest 2.10 preview.

No source file or test is named. Start by reproducing the workflow with nested If activities, Wait All join mode, and blocking Run Workflow activities; trace when each activity reports Done. The fix is complete when the join remains blocked until every If branch and its running activities have completed.

Written by the indexing model from the issue text.