Problem
Some skills can be successfully 'a'pplied under conditions that don't make sense.

In the wilderness
Alchemy is usable in the wilderness, and with a high enough Willpower, failed attempts can generate huge fireballs that span through forests and mountains!
Detect Traps, Disarm Traps, Haggling, Pick Pockets, and Ventriloquism are usable in the wilderness. They act as if there was nothing in the square they're used on. The last three can still be used on the PC himself.

In the dark
Alchemy can be used in the dark (but not while blind).
Bridge Building can be used in the dark.
Cooking can be used in the dark.
Detect Traps can be used in the dark (but not while blind).
Disarm Traps can be used in the dark.
Fletchery can be used in the dark
Gardening can be used in the dark.
Haggling can be used in the dark.
Metallurgy can be used in the dark.
Necromancy can be used in the dark.
Pick Locks can be used in the dark.
Pick Pockets can be used in the dark (but not while blind).
Smithing can be used in the dark.

Stuck in webs
Bridge Building works while stuck in webs.
Fletchery works while stuck in webs.
Haggling works while stuck in webs.
Necromancy works while stuck in webs.

If the PC is confused
Bridge Building works while confused.
Cooking works while confused.
Detect Traps works while confused.
Disarm Traps works while confused.
Fletchery works while confused.
Gardening works while confused.
Haggling works while confused.
Herbalism works while confused.
Metallurgy works while confused.
Necromancy works while confused.
Pick Locks works while confused.
Smithing works while confused.
Ventriloquism works while confused.

If the PC is stunned
Cooking works while stunned.
Detect Traps works while stunned.
Disarm Traps works while stunned.
Gardening works while stunned.
Herbalism works while stunned.
Metallurgy works while stunned.
Necromancy works while stunned.
Pick Locks works while stunned.
Smithing works while stunned.
Ventriloquism works while stunned.

If the PC is muted
Ventriloquism works while muted.

If the PC is blind
Bridge Building works while blind.
Cooking works while blind.
Disarm Traps works while blind.
Fletchery works while blind.
Gardening works while blind.
Haggling works while blind.
Metallurgy works while blind.
Necromancy works while blind.
Pick Locks works while blind.
Smithing works while blind.

How to reproduce it
See above.

Notes
See above.