Hi JHowell,
In my media query test I used Amazon's code for displaying different content based on device:
Code:
.defaultcontent
{display:block;}
.mobicontent
{display:none;}
@media amzn-mobi {
.defaultcontent
{display:none;}
.mobicontent
{display:block;}}
This, as opposed to simply styling the same content differently, appears to be the likely culprit. This despite Amazon including the above code in their latest Publishing Guidelines (2017.1). Another death knell for consumers with mobi7 devices?