Reported by Steven Aus:
#51 - In a battle, my side had Master Gremlins (speed 5), Stone Gargoyles (speed 6) and Magi (speed 5). On the Stone Gargoyles turn I cast Slow on the one stack of Marksmen on the other side, reducing their speed to 4. However the Marksmen still got first attack, so I guess that part of the code determining battle order/priority after casting Slow or Haste isn't working as intended yet. In a battle with the same army against a stack of Horned Demons - a Haste on the MGs or Slow on the Horned Demons affects number of hexes of movement but not the battle priority/order.
http://vcmi.antypika.aplus.pl/forum/viewtopic.php?p=2607#2607