Game Mechanics: LoS issues in Permafrost

[Tecmos Deception]

The early portions of permafrost (the tunnel leading up to the first big room where stuff starts to branch out is what I've done so far) are FULL of line-of-sight issues for spellcasting. I'll be standing in the middle of a small room/tunnel around here, with a goblin beating on me right in front of me with no apparent obstacles to LoS, and spells just keep giving me the "You cannot see your target" crap.

Best part though was the first little room that has 2 goblins and a fire in it. I tried to jockey around for position to cast on either of them, no luck no luck no luck. Then I retreat deeper into perma and no longer have actual LoS to them (i.e. in first person neither of them are visible because of the rock partially obstructing the entrance to their room), and they aggro me and come running over to engage... lol.

Working my way deeper in, we'll see if there are more problems there. At least the ZEM seems to be great though!