"Replace with current URL" is bugged.

[S8F8ry]

This brings 2 questions:
1. Then why user is overall allowed to add bookmarks in incognito, if it's so isolated? = and those bookmarks are equally visible/usable in normal mode.
2. Why bookmarks added in incognito do have icons, no matter the isolation mechanism, and only lose them on "replace"?
There is definitely some pass that Add uses, but Replace doesn't.

1. It isolates the cache data generated in Incognito mode; the browser can still view and interact with web pages, and bookmarks can also be added to the browser.
2. Indeed, when adding a bookmark directly, the browser can use the icon currently displayed in the active tab. However, the current operation of Replace with current URL is equivalent to directly editing a bookmark and modifying its URL. Therefore, it does not retrieve the icon from the active tab but instead queries it from the browser's cache.