Hopefully. But I'd guess ZOS developers are all busy scrambling to put together the next big PvE update to care much about fixing old problems like leap. I haven't encountered the endless cc immunity glitch yet personally but a friend mentioned it a few times
This was the poison that allowed Moon Hunter to stack an extremely high amount of W/SD before they changed the set and the poison (in that order, for some reason). I wouldn't be surprised if it had a few bugs around them lingering about.