This has been ongoing for at least 4 months now. Enemies in certain areas of the game, both in open world and in instances have been spawning with invulnerability time for upwards of 20-25 seconds. It's not that they're spawning without any command code either, they're spawning ready to kick your ### and will attack you and register hits as normal, but you can't do any damage to them. This happens in open world areas where enemies have a high respawn rate, but isn't something that happens at every location where enemies have a high respawn rate. Take for example the areas near the safehouses where there's always a mission to defeat a swarm of braniac drones. Them drones spawn rapid fire but don't suffer from this bug. Then there are areas where joker minions spawn and are effected by this bug. There's another early braniac mission where you have to take out these satellite-a-majigs while having to clear the area out of drones before you can hit the uplinks without being interrupted, only problem is you can't clear them out before they respawn because they're spawning with god mode. Also happens in instances like A51 and a few others. This may or may not be related to the same bug that is causing large time delays between the input of an emote command and the actual animation. Both bugs appeared around the same time. Highly recommend the god mode bug gets fixed in the same release with the next DLC/update or prior to it. It's a pretty big oversight that hadn't received any attention at all when it was reported on the old forums. Hopefully these new forums demonstrate that has changed.