Reported here: https://forum.lulzbot.com/viewtopic.php?f=8&t=8067
So wanted to put this more out as a warning to people then anything, but you could argue it a bug report (probably already has reported, but better safe then sorry).
Anyway, in the new CURA, there's a setting "Printing Temperature Initial Layer", with a description that includes "Set to 0 to disable special handling of the initial layer". While the description says this, I think someone forgot to update the code to actually handle this situation (seems the most likely, I could see that being missed).
I confirmed in the gcode that if you leave it to 0 you see this
M109 R0 ; wait for extruder to reach printing temp
And you'll see your printer cooling down the extruder to 0 after just doing auto-leveling. Also, just to confirm this, looking at the gcode, there's no extra code in place that would bring the printer back up to temp. In fact, I am pretty sure it would try to print. Which of course, would just cause filament to be chewed up since it can't extrude it.