Editing the Revision Due Date changes the status to 'Request Accepted'

I am having an issue with editing the review due date. When a review is overdue, I would like to extend the given time to the reviewer. However, when I edit and extend the due date of the review, the system automatically changes the status of the reviewer to ‘Request Accepted’ even though the reviewer did not accept the request yet. I don’t know how I can fix this, is anyone having the some bug?

I am using OJS 3.3.0.11 and operating with the role of Journal Editor.