Even worse, to this day, Ubiquity still does not support Android IPv6 clients because their internal-facing RA dnsmasq configuration has a bug. It would take an engineer a few hours to fix it; it's a one-line change. It's been reported and tracked internally in their support queue for more than two years; nothing has come of it.
It's not a _good_ reason, Ubiquity should've included IPv6 support from the start with the price they're asking, but it's a reason.