I noticed all sub-tasks are being created with Parent info (Fix Version/s). In my workflows configuration the Fix version is a mandatory field (bug-workflow), except for sub-tasks (sub-tasks-workflow).
I have checked the options of the create transition on the workflow assigned to Sub-task issue types and there are no options to include parent info, in fact, I have added a Post Function on the Create transition to clean the field of Fix Version/s when the sub-task is created, but it didn't work.
Do you have any ideas why this is happening?