Backpack is showing all 7 rowsNot An Issue

but I've only allowed for the default group to see three rows. the other rows are greyed out, but still visible. 

I've done the oxide.grant group default backpacks.use.3 in the console and this is my json:

{
"Drop on Death (true/false)": false,
"Erase on Death (true/false)": false,
"Use Blacklist (true/false)": false,
"Clear Backpacks on Map-Wipe (true/false)": true,
"Only Save Backpacks on Server-Save (true/false)": false,
"Blacklisted Items (Item Shortnames)": [
"autoturret",
"lmg.m249"
],
"Backpack Size (1-7 Rows)": 3
}

How can I fix this? thank you.

In response to Pooterlicious ():
but I've only allowed for the default group to see three rows. the other rows are greyed out, but st...
I think you will find that might be the same as the recycle box and Skin box where only one slot is available and all others greyed out and the same for fancydrop crates which will do the same, they cant use them anyway.
As pookins said, that is intended.
I can potentially update it to show less (1, 3, or 5 rows) but that's not of high priority for me at the moment.
Oh, okay. Im getting messages asking if I increased the bag sizes lol. 
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