How to disable edit mode when user clicks outside the row in screen while in row edit mode

Summary:

Hi Experts

Highlighted column in below screenshot from my editable table is a text area, to edit a row i'm clikcing on the edit button at the start of the row but when user enter details in text area column and then press "enter" button on keyboard instead of cursor coming to next line the edit mode of that row is getting change to navigation mode i.e. the editable table edit mode is getting over.

Please help as i want the edit mode not to get over when clicks anywhere on the screen unless user clicks on right mark when in edit mode.