Feminized Auto's on 24 hr Light - Ever Had To Induce Flowering?

I grow my feminized autoflower plants on 24/0 light (no dark period) and I understand how AF's work in general, not needing a dark photo period to induce flowering. But Im asking anyway - has anyone ever grown autoflowers on 24/0 light and found that they actually had to introduce a short dark period (say 20/4) to induce flowering? I have fem'd AF's in their 5th week and dont see one sign of tendrils. Id show pics, but I cant get good focus close up, and there's nothing tendril or balls (sex) to show anyway.

This hasn't happened to me personally, but I've read of it happening.
The biggest offender right now is Nirvana Seeds, they've had a big issue with this over the last 6 months or so.
It comes down to poor breeding, because they're sell you auto-flowering seeds that don't contain auto-flowering capabilities.
They tried to rush their products to market and it shows in the quality.
In other words, you have regular plants growing, not auto-flowers, so flower them accordingly.
Good luck.

In my competition "The Autoflower Cage Match", there are a few of us that are experiencing longer than usual vegetation periods with our Autoflowers.

Since we all bought them from different sources and banks, we are slowly coming to the conclusion that it has to do with the strange weather we all have been experiencing.

Local farmers in my area were talking about unusual plant cycles this year.

Hey KuLong - thats one hellova thread - wish I would have saw it when I cracked seeds - mine cracked on April 1st, and I have no sign of sex on any of them yet. Theyre very short and healthy - and for the record, Im growing 10 of them - they are Bubblator Ice plants, fem'd autoflowers, from WhiteWidowSeeds.com - Im 35 days in with no wisps. They STINK though. ALL DUE RESPECT but what does weather this year have to do with indoor growing - indoor growing is environmentally controlled for the most part, no?