“So you’re being asked to look for a Church document between the years 1896 and Vatican II.”
No. I asked for a Church document from after Leo XIII until now. Vatican II ended in 1965.
“As far as I know there isn’t even a document about the Anglicans during that short period of time, probably because there was no need.”
The “As far as you know” is pointless since you did not even get the time period correct.
“Meanwhile traditional Church teaching has always considered the Anglicans heretics.”
So you’re de facto suggesting tradition stopped after Leo XIII?
“Anyone who believes otherwise needs to offer up Church teaching that teaches otherwise.”
Maybe you need to read more. Remember, you got the time period wrong.
Again, anyone who claims the Church no longer teaches that Anglicans are heretics needs to provide Church teaching to support that. That means you. Until you can do that, then what Leo XIII stated in 1896 still holds true. However, it sure would be odd for Church teaching to contradict itself.