When the number of characters exceeds width of text box in CS% and WIN 7 all of the text in the text box disappears. The only way to make it visible is to widen the text box then edit the line. Also happens when I make the size of the font larger and the character's width exceeds size, all the text disappears. This is uncommonly tedious. How can I fix it?
Try looking in the flyout menu of either the Character palette or the Control Bar to see if it has 'No Break' applied.