I had the same problem and I would love to know how to stop it.

Add few spaces after cm and see if it works. It worked for me.

"C.Woulds" wrote:

My version of excel (2000) has stopped displaying y-axis titles properly.
For a title like Depth / cm, it will only display Depth /, for example. This
is unaffected if I change the font size of the title. The box in which the
title sits is always too small, and I am unable to change it. Does anyone
have suggestions of how to stop this happening?