That WooCommerce Product Bundles plugin looks like it is inserting an image gallery in the product summary area (where price, add to cart etc. is).
I don’t understand why it does this, but anyway the plugin has some CSS styling that is applying a negative left margin of 100px (margin-left: -100px) to it’s own gallery images making them appear partly over the top of the standard product gallery, again I don’t know why the plugin does this.
To remove the images negative left margin, add this to Additional CSS:
.bundled_product_summary .bundled_product_images {
margin-left: 0;
}