I found a functional fix for the issue where you can preserve the shadowy box instead of getting rid of all the formatting.
You can read about the fix here and see the full documentation, or you can keep reading because I explain it below as well.
In the posts.css file under Montezuma Options > CSS Files > posts.css you will find the following class:
.post-thumb {
margin: 0 auto 15px auto;
display: block;
padding: 6px 6px 5px 6px;
border: solid 1px #ddd;
border-bottom: solid 1px #ccc;
background: #ffffff;
}
To fix the issue I just defined a height. This might be bad form, but it worked in Chrome and in IE, I didn’t check Firefox. The fix is below:
.post-thumb {
margin: 0 auto 15px auto;
display: block;
padding: 6px 6px 5px 6px;
height: 185px;
border: solid 1px #ddd;
border-bottom: solid 1px #ccc;
background: #ffffff;
}
Hopefully this helps!