Button icons in the Designer page are all rectangle in shape.

i'm not sure how to describe the other issue. all the icon buttons in the designer, like settings, save, back, expand-all are a rectangle shape with little markings inside.

It seems that it is being affected by the Blackboard theme as well, notice that the fonts are also the same as the theme.

 

I will ty to investigate this further and get back to you as soon as I have found anything.

Thank you.