Hello,
when updating to SP 5.4.6, the image shape display was fixed, but the line around the image is still not displayed correctly. see picture.

The original CSS code in the image addon
#addonId .sppb-addon-single-image-container:before{
content: "";
position: absolute;
top: 15px;
left: 15px;
right: -15px;
bottom: -15px;
border: 4px solid #C6FE8E;
border-radius: 0 0 500px 500px;
transition: .5s;
}
#addonId:hover .sppb-addon-single-image-container:before{
top: -15px;
left: -15px;
right: 15px;
bottom: 15px;
}
Regards, Milan