excel text wrap in a cell

This is my first post, and i hope I am "doing it right". When I want to wrap text in a cell I select Wrap on the ribbon at the top of the screen. Until recently this worked fine. Now when I select wrap, only the last piece of my text displays and the rest is hidden, although I can see it all if I click on the cell. Any ideas?
thank you,
loveopera

Hello and welcome.

What's likely happening is that the cell is not automatically resizing to accommodate all of the text. If you want the cell to expand, double click between the row of the cell and the row above, or between the row of the cell and the row below.

For example: If you're entering text into cell 21L, move your mouse all the way to the row numbers on the left and double click between 20 and 21 or between 21 and 22.