why can't I see cross hatch on hidden slides

I installed Libreoffice 5.4 in Linux Mint 18.2 via ppa. When I did, the contrast on the slide pane went away, cannot see the outline of the slide, all is white and I cannot see the difference between the hidden slid and a normal slide. What do I need to do to fix this?

Did you try to change the theme of your Linux distribution?