Hi @delaitec,
I’m not too sure if these plugins are to blame for the issue, as I’m not familiar with them, unfortunately. They could potentially have caused it if they tried to regenerate the image, but I can’t be 100% sure.
The modification wouldn’t have been CSS related, but it’s odd that it disappeared and came back after making an edit. Maybe there’s another plugin on your site that’s messing with images?
Unfortunately, saving the metadata for restore isn’t an option for this plugin. It would add far too much weight to the database in duplicated metadata and therefore would slow everyone’s sites down.
As we’re not seeing this on a huge amount of sites, I have a feeling it’s something within your WordPress stack that’s causing the issue. Can you try uploading a fresh SVG as before, but disable all plugins other than Safe SVG before you do so. Keep them disabled and refresh the page a few times. If you don’t see the issue, then the error is being caused by another plugin.
In that case, enable them one by one and refresh the page with the errors until you see it again, at that point, you should be able to narrow down the plugin in question.
Cheers,
Daryll