When I try to click on the icons in the upper left corner (edit/trash/style/move etc.) they are visible UNITIL I move my mouse over it. Then they disappear.
I notice all editing icons are INSIDE the green boxes and always work fine.
It's the editing icons in the blue boxes for section, row etc. that are the problem because they are ABOVE, not INSIDE the container. If sections are too close or overlap, it makes editing impossible.