Why does the list node removes password url’s or add’s “unsafe” in front of it

I’m trying to add images from my local network inside a list node
This node: https://flows.nodered.org/node/node-red-node-ui-list

This works fine for basic images from the internet. But when I want to use an image from my ipcam behind a password like this in a HTML structure:
it completely removes the link. And if I add it as “icon” it adds “unsafe” for the link so it becomes:

This happens inside the list node. If I debug before the list node, the output seems fine.

How can I resolve this problem?