“Since when did the Catholic Church teach that Anglicans are not heretics?”
Do you know of even a SINGLE Church document that refers to them as heretics rather than as Anglicans since after the pontificate of Leo XIII?
“Did the Church change it’s mind?”
Nope.
“Was It wrong at one time?”
Nope.
Now, a good, well educated Catholic - one who actually knows Church teaching - would be able to make the proper distinction. And that means you’ll fail to do so, right?
What's wrong with Pope Leo XIII? Do you not consider him to be a Catholic pope? If not, you're making my point that the Church has digressed from it's past, true teaching.
Then, I recommend you find one ASAP!