My Back Button died. I don't know why, but now it looks weird, Like the picture below.

If you go to Preferences/Appearance/Page/Back
Have you got a Logo loaded into the Back Cell ?

Maybe try reloading ?

What is the logo you have loaded into the Back Cell ?

Many thanks

Ok, I thought back meant background. Maybe you should make it say back button or back icon?

Image is for background image
Back is for back cell

You omitted to mention if this had resolved the question.

Many thanks