sir_isOanswered grow question 3 years ago *vroom vroom*
BioBuds is pretty much entirely correct.
That thing is nowhere NEAR finishing, is only starting now, and has ample time to flower (unless of course you believe everything marketing suggests). You're gonna get some nice weed, but you'll need some patience.
So basically, it's a photoperiod, likely because of how the chromosomal makeup was selected. That happens now and then. Like genetic bias or regression for some seeds. So essentially, it lost some autoflower/ruderalis traits. Also, that can happen because of really good conditions. Like the plant is growing well, so it conttinues growing well (autoflowers are from plants that are massively stressed to reproduce, because of environment and conditions).
Take it as a sign that you have good conditions and the plant is super healthy (as well as a bit of a freak, compared to what it's supposed to be).
Personally, I think that's a good thing coz I really don't like autos...but yeah....