A June Due Date is reflected as July on JWM/Business Board

Issue Summary

When selecting a Due date in the month of June, it is reflected wrongly as July.
The Calendar tab also displays July twice.

Steps to Reproduce

1. Update the due date on an issue under a Business project as 3rd June
2. Check teh date on the Board

Expected Results

Due date should show "Jun 3"

Actual Results

Due date showing as "Jul 3"

→ This will be the same for any June Due date.

Workaround

Currently there is no known workaround for this behaviour. A workaround will be added here when available