ToME: the Tales of Maj'Eyal

...doesn't show it's duration - it's always 1 or 2, and damage mitigation effect last 1 or even 2 turns longer then autoattacking with shield in AoE.

It's coded as a 'map effect' like Ice Storm or the like - so doesn't show duration in the buff, as that's a separate effect applied by the map effect. Is a bit weird though, might change that.

And what about difference in auto-attacking and damage mitigation effects?
Could that be caused by my char having temporal energize item?