Hey @Marc this looks like the old editor to me. It has been replaced with this editor. (Thanks for the System Info, very handy)
The new one is default in 8.11.
The new editor allows import. But paste would be a good idea. I’ll add that to its features.
https://mcneel.myjetbrains.com/youtrack/issue/RH-83490/SVGEditor-Allow-for-Pasting-a-bitmap