This crops up from time to time. I have a suspicion there is “something going on” with autocreated Items, but can’t see what.
An Item is an Item, a channel link is a link, there should be nothing special about autocreated Items.
There is a lot of room for confusion, undecipherable Item names being mixed up with channels or Things, Items being literally hidden by PaperUI etc. that I am sure is behind most troubles.
But often there are hints that autocreated Items somehow block manually created Items from working. Perhaps that’s a side effect of some bindings with multiple links competing.