I made a "toy" workflow that seems to run fine. It calls a single task. It's a "tiny" hello world.
I redid it in "mega" style where the task is called 1000 times.
During attempted submission of the "mega" task I got timeouts but not from the regular "single" style task.
The only difference is in the number of calls using the WDL "as" keyword.
See the attached WDLs!
I note that the timeout issue I've experienced with as little as 7 tasks submissions from a single workflow!
The timeout issue seems related to the number of tasks being submitted?
-eddie