[1.01 Bug] Autocombat in Tactical battles wastes so much mana that it goes negative!

Also in 1.0, but when I am winning a tactical battle and decide to autoresolve, the AI decides to cast spells like there is literally no tomorrow

(and there won't be, because now I don't have enough mana to slow down the doomsday clock).

The last few fights (before and after 1.0) I go from positive 50-100 mana to -50 to -100 or so.  

Please make a feature to turn off spellcasting in autocombat, with mana being so precious it forces me to never use the autocombat feature and slog through the tedious, lopsided wins. 

(This was also my biggest complaint about Legendary Heroes, though it's worse with the doomsday clock here).

It doesn't seem to happen with autoresolved battles, just when I let the AI take over in tactical.