Stonehide bag hiding 4 slots

[Liljna]

I have the same problem with both bags and boxes. My 16 slot Ash strongbox only shows 12 slots, because the last 4 are hidden. Briarwood strongboxes shows 18 slots (but has 20 slots).
Sandalwood (28 slot) and Rosewood (32 slot) showed the correct amount of slots.
What kind of help do you need to nail down this problem? More information, or screenies or something else?