After years of problem-free writing e-mail messages using Windows Mail, a cursor control problem suddenly cropped up.
When writing a message, on reaching the right-hand page margin, the cursor does not automatically return to the beginning of the next line . The text just keeps on going and it pushes the previously written text off the edge on the left-hand side of the page.
Reviewing and editing text becomes an impossible task unless the "Enter" key is used each time the RH page margin is reached and the complete message is displayed.
In text corrections the cursor sometimes tends to jump around unexpectedly.
How can this be fixed?