Chests showing 0/20/70 chances for lockpick success are displaying incorrect chances

Silynx

Hey,

Sea Troll Chest - Rusty Lockpick Chance wrong.png

Chests showing this 0/20/70% chance spread for lockpicking are not showing the correct chances. I burned about 50 rusty lockpicks on multiple of these chests and got non to open. That seems incredibly unlikely.

Thanks for looking into this,
Silynx