Summary:

• Currently, when we link the confluence space under Knowledge base settings, the "Knowledge Base" system field gets added to all the issue types and it can be removed from the request type issue view.
• For the subtasks, we do not have any request type configured, the field can't be removed for the subtask and hence the field appears in the subtask even when the parent issue doesn't have that field.

Suggestion:

• We should have the ability to remove or hide the "Knowledge Base" field for subtask.