Some bookmarks don't appear in Address bar drop down menu

cris2d2

cris2d2

I'm using Opera 94.0.4606.38.

I don't know if it's a bug or a feature but some bookmarks don't appear in the address bar drop down menu when I'm starting to type their address. Only search suggestions appear. If I disable search suggestions and start to type the address of the bookmarked website, nothing appears in the drop down list.

I repeat, this doesn't happen on all bookmarks, only on some.

Is this a bug or a feature?