Ahh, I should have thought about SVG being the culprit. I just blamed GSAP, because I am least familiar with it. This door is just a teeny part of a very large SVG component. I can't really isolate it or go with an image at this point.
I did create three door images; closed, mid, open. I was originally going to tween those with GSAP, but I was having issues getting my head around how I would do it. I'll have to give that a go.
Thank you for your help and suggestions.