I have been having the
weirdest issue with SVG on Generate Cover...
Some background first. I downloaded
Kuzzzma's templates a while ago. I found them nice, but not quite what I was looking for. I decided to create my own.
Inspired by Kuzzzma's AO3 variants of those templates, I decided to create separate models for each major source of downloaded fiction I use -- AO3, Fanfiction.net, TTHfanfic etc, each one with a different basic color but following the same layout. I use the latest version of Inkscape, by the way.
It all went well at first. I obtained SVG logos for some of the sites, and I could embed them fine as editable objects. For a few of the sites, I could only manage to find a PNG logo (with transparency), and those embedded fine too.
I had a minor hiccup with one site which lacked a proper logo so I just used text in a fancy font; the SVG worked fine in Inkscape, Windows explorer, browsers etc. but the text got all out of alignment in Generate Cover; that was solved by converting the text into separate glyphs (and then it occurred to me that making the svg dependent on a font was a bad idea, so I converted it to curves). In fact, it all seemed to be going fine... until Patreon.
I can't fathom why, but Generate Cover persists on placing a back rectangle over the Patreon logo. I tried using SVG, PNG and even GIF versions of the logo; it made no difference. I thought that the SVG might be corrupted; I copied one of the templates I had made for other sites (and which were working) and just replaced the logo. Same thing. They render fine on browser, just not on Generate Cover.
I know this is just as far from serious as an issue can be; There is an easy workaround, I can always save the template as PNG instead of SVG. But the little OCD inside my mind is frustrated wondering what the heck could
possibly be causing this behavior.