is there any error message thrown on the server?
Hard to tell, why this is not working for you without more information.
What i can say:
Items are added to the screen in the order: belt items, wear items, inventory items.
All items are shown 1 by 1.
It looks to me that the first item you are wearing is causing the issue, since it prints all items until it reaches that one.
i can double check on my server, but would be nice to know:
1 - what is that for an item?
2 - has it any perks?
3 - is it comming from another plugin and is the plugin adding additional information to the item (into the text field or its chaning the name)?