Using quform2 2.10.0 with NextGEN Pro 3.0.10: In the visual form builder, the trashcan symbol is not displayed in the two places it should appear. Also the pencil icon is replaced by a small square. When I deactivate NextGEN Pro it works as expected. See screenshots with NextGEN Pro active and inactive.
I discovered that if you hover the mouse where the trashcan should be displayed, the tooltip “remove” is displayed, and if you click, the remove function still works.