PhotoPaint Transparency -- how to remove?

I'm sure I'm just being stupid about this, and I don't think I've ever had this issue in CorelDRAW, but in PhotoPaint, in trying to adjust an object's transparency, I wanted to remove transparency to start over. I select the Object Transparency tool and click the "No transparency" button, but the object remains transparent. For the object pane on the right, it shows the object's opacity at 100%. But I can barely see the object, like it's about 95% transparent. 

This seems to happen to me frequently when I use the transparency gradient -- just throws the object into a weird hyper-transparency mode that I can't remove, but I'm not sure if that's really related.

Any ideas? How do I just remove all transparency as if I had never applied any transparency?

Thanks!