Hi eXalted,
Im experiencing the exact same problem. Did you happen to find a solution? I realise that this is probably not an ACF issue, but a fonticonpicker issue, as disabling the fonticonpicker scripts solves this – but leaves you with a simple select instead. But I can’t figure out why it considers it a form change. The selected <option> value doesn’t seem to change. If you found a solution I would love to know how?
Cheers.