ToME: the Tales of Maj'Eyal

Playing doomed, shadows fail to spawn, even though I have the hate to do it. However, after I enter a new area the shadows are spawning again.
Is this intentional, as if shadows are used up in an area as if they were spawned by dead bodies or something?
I doubt it though, seeing as it makes the doomed character weak because of lack of shadows.

They won't spawn on the wilderness map (where the town/dungeon icons are displayed), but if the sustain is on and you have the hate, they should spawn everywhere else.