As the title says. You cannot use auto-aim on the second lord (Final boss on the Fire level), the auto targeting is retarded and aims for the stupid boms he constantly summons which are immune to damage. Another bug is that while those bombs are immune to damage, they aren immune to getting non-damaging buffs applied to them. This needs addressing.
#Auto-aim is broken on second "lord"
full ore
viral ravine
Got the same issue. Had to temporarily switch to manual-aim mode in order to beat the boss.