The inverse is easily possible using the "Sub Task Blocking" condition in the workflow transition.
The one you are asking is also possible if you add a scripted condition using the ScriptRunner plugin in the workflow transition condition in your sub-task transition to the state you want. All you have to do is to check the status of the parent issue and if it is in the desired state, pass a true else false.
@Arun Thundyill Saseendran
Over the next several weeks we'll be sharing some of our Getting Started guides here in the community. Throughout this series of posts, we'd love to hear from customers and non-customers ab...
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