Hi,
That does not work. You’re right. However, this is basically not a bug, because this process is not part of the plugin.
The plugin enables you to integrate svg images via a shortcode. The fact that you can load the svg via the WordPress image functionality has nothing to do with this plugin (the same applies for the gallery).
The problem is that WordPress resizes images and uses those generated files for the gallery (and regular images, if selected). But you cannot resize SVGs like you resize a PNG. That’s why WordPress has no information for e.g. the thumbnail of the SVG.
Here’s a little workaround for galleries:
You can add detailed size information into the gallery shortcode.
Go to the text editor, look for the gallery shortcode, and add the size-information. It should look like this:
[gallery ids="1940,1939,1920" size="140,100"]
Downside: every image gets the same size. The only other way here would be to use “full” instead of width and height.
Try: [gallery ids="1940,1939,1920" size="full"]
As mentioned earlier, all other size-names like “thumbnail” want work out of the box.
Hope this helps.