Why does my line graph change into OLE box if I deselect it?

In LO Calc, my line graphs change into a blank OLE box every time I deselect it, meaning I can’t mess around with parameters that influence the data used in the plot in a seamless way. The data is in different sheet but the graph and the parameters are on the same sheet. Am I the only one experiencing this? What am I missing? Thank you for your time.

I’m using Libreoffice, Debian Wheezy, Gnome 3.4.2. Also, I don’t think my graphics card is being used.