Issue is marked as added to sprint after start time if it transitions from an unmapped status to a mapped one

Problem Definition

Let's consider the following scenario:

• Issue ABC-123 is assigned to SprintXYZ.
• ABC-123 is in status Open.
• The board SprintXYZ belongs to doesn't have the Open status mapped to any column; it is an unmapped status.
• SprintXYZ is started.
• ABC-123 is transitioned from Open to To Do; To Do is mapped in the board. 
• ABC-123 is marked as added to sprint after sprint start.

Notes

• Even if ABC-123 is directly transitioned to a status in the Done category, it will still be flagged as added to sprint after start time. 
• If one of the issue's fields is changed so it's included in the board filter, it will not be flagged as added to sprint after start time. 

Suggested Solution

The sprint reports should only look at when the Sprint custom field value was changed to find out if an issue was added to a sprint after start time. 

Workaround

None