i dunno about that, i think it might be your area, my wifi is the most stable plant i have ever come across, i revegged two cuts of it as a stress test and zero nanners popped. I have also grown it for about 3 years now and have had it in numerous different enviroments, LEDs, hps, cmh , and rooms with light leaks, never threw a nanner once while other plants threw nanners (fixed the light leak). I also did a side by side, two cuts of wifi in organic two in hydro, under cmh/led lighting , zero nanners on all plants (use GH 3 part nutes + silica and a couple supplements)
GG4 is way more unstable than wifi is, GG4 is legit a hermie cross. I would be careful when using hermie crosses in breeding they are MUCH more likely to go herm and if your cut of wifi is unstable and your crossing to another unstable plant...well that's a recipe for disaster.