Known issues with "Hordes of the Other World"

[Discontinuum]

1. During each turn, there are messages from Lua "Malformed range (1..8)" in the chat. According to some of my past experiments, they are cased by {VARIABLE_OP did_spawn rand "(1..$spawn_chance)"}, though I don't see where it might be incorrect.
2. Teleportation to a keep almost never works, it almost always claims that there are too many units around the keep, so we can't teleport
3. I guess it's partly a consequence of the 2nd issue. It's said leaders can't die but mechanics doesn't quite work. When the leader is killed, it's slowed and 1hp but it remains on the spot (can't teleport to the keep). And when the leader killed the second time, he/she is killed for good. I have a short save LotI - Hordes of the Other World Ход 5.gz to demonstrate each of the points