The Syriac Vulgate is dated kindly about 400 and later than that if one is being strict, up to the 500’s.
In short, any heading in it was very late, and was no different than the heading in any of our current bibles....an addition by an editor/scribe.
In this case it’s entirely in keeping with the scholarship that says early Christianity held to a late date of Revelation and that that did not change until much later....400-600 being much later.
There is no logical explanation for Christian writers continuing to look to the future for the fulfillment of Revelation events if such things had already taken place. And the ante-nicean fathers never mention such things except as future events.
Ooops....The Apostles forgot to mention to anyone that everything was fulfilled. How careless of them!
Gimmeabreak!
Granted.
There is no such "scholarship;" there is only a single, imprecise reference from Irenaeus. Read from Harley's link...
Your late date is the minority opinion, but serves a variety of worldly interests.