Perception auto-detection of traps/items not working

[Solcutter]

In my game, Linzi right now has a perception score of 12. I use her as my main scout to find traps or hidden items in any unexplored area. I walk her through the map until it is revealed to make sure I don't miss any area with her.

I had made it to Ratnook Hill, and had Linzi start going up the left side of the map. At the top right, there is an entrance to a cave, protected by several traps. Linzi triggered one without detecting it. I brought the rest of the group up to Linzi's position, and Harrim (who has the next highest perception score in the group at 7) started detecting traps. It was as if the detection for Linzi was just turned off.

What happened next was the weirdest part. I had withdrawn the rest of the squad again, Linzi was alone. Had her move again and was hit by an invisible trap. I had her use a heal spell on herself, and all of a sudden her perception checks started working because when the animation finished, a trap showed up as it normally would if detected.

[RJM]

You're not guaranteed to find all the traps with a perception of 30, let alone 12. It's quite possible that she rolled a pair of 1s. Having several people with decent perception in your group definitely improves your chances of spotting hard to see things.

[mreed2]

Correct, working as designed. If you come back with different characters, or the same characters after they have leveled up, you may be able to detect the hidden items that you missed the first time.