Easy to test:
- Switch to your ‘obstacle piercing’ wand after entering a map -> projectiles will not pierce obstacles.
or - Enter map with ‘obstacle piercing’ wand being unequiped. Switch to your obstacle piercing wand after entering a new map -> the weapons projectiles will not pierce obstacles.
Apparently either game server or client are unable to change generated projectiles attributes if the wand is changed after already having entered a map.