Hi, I've noticed that dmg from offhand weapons is ignored after changing the location. That's silly and for over 40lvl I've been strugling with half of my damage. Check the video.
Off-hand damage is not being ignored. The bug is that wielding two one-handed swords isn't turning on dual-wield bonuses until you change a weapon type which forces an update.
I have made a fix for this which will be in an upcoming patch. Until then, the simplest work-around is to use a rapier in place of one of the swords, as the thrusting swords are technically a different weapon type, so avoid the bug.