All images did display fine with Firefox, and they still do.
Lazy load is a great idea in principle. In my limited experience, it seems to do the opposite of what’s intended and yields a poor performing website. I’ve started taking Jetpack off of as many websites as I can, but for those that must have it, I make sure Lazy Load is OFF. (the site in question does not use Jetpack)
Thank you so much, of all your fantastic themes, I think Bravada is the most glorious yet!