I’ve had buds produce like 1 or 2 pretty hidden bananas that I didn’t catch until later on that could have possibly pollinated a plant or 2. Not positive but I’ve ended up with a few plants with micro seeds before with no obvious signs of males.
I’ve personally never flushed, never made sense to me. I fed last grow like 2.5 EC right up until harvest and it burns white. I don’t see how things that are already assimilated into the actual plant tissue can be taken out. IME a shit burn is usually either not dried enough or possibly tiny micro seeds. I’ve even seen people take out buds that were dried very well and had them burn like shit because they were rolling outside in like 65% humidity or some other humid environment.
Fasciation is actually very often mistaken for polyploidy but you can’t tell a polyploid plant by looking at it, only with a DNA test.