Bukkit

What version of QuickShop are you using? 4.3

What version + build of Bukkit are you using? git-Bukkit-1.5.2-R0.1-1-g53734d2-b2772jnks

What is the issue?  Everything working normally.  After a period of time, all the floating/bouncing item icons disappear off every shop in the world.

Copy paste your config:
#Tax amount (decimal) - Eg, P1 buys $50 worth of stuff from P2.  Therefore, P1 loses $50, P2 gains $(1-0.05)*50, and tax-account gains $(0.05)*50.
tax: 0
#The fake player who money from taxing people goes to
tax-account: tax

#Should we log transactions/creations to Bukkit\Plugins\QuickShop\qs.log?
log-actions: true

#Advanced.  This chooses which economy to hook into.  If it fails, it will fall back to trying vault. Spelling must be exact. Case insensitive.
# Vault - Will hook into anything vault can hook into (Vault is required for this to work)
# Satoshis
# Want yours added? Contact me (Netherfoam) on dev.bukkit.org
economy: Vault

#For item-item based economies that don't use virtual coins.
whole-number-prices-only: false

database:
    mysql: true
    host: localhost
    port: 3306
    database: minecraft
    user: bukkit
    password: sql4mc

#Limits the number of shops a person can create and own at a single time.
limits:
    #Disable these if you're not using them! If this is false, the rest of this section is ignored
    use: false
    #The default number of shops players can make
    default: 10
    #Players with these permissions can create these amounts of shops.
    ranks:
        #Anyone with 'quickshop.vip' permissions, can create 20 shops instead of 10.
        quickshop.vip: 20 #Players with quickshop.vip can make 20 shops.

#A list of block (materials) which can be used to create shops.
#By default, chests are added to this list.
#This will only work for blocks which implement InventoryHolder
#in other words, no enderchest shops, no shops on dirt blocks, etc.
#May cause unexpected behaviour with some blocks... Eg don't make a
#shop on a hopper (It sucks the display item in) and furnace shops
#allow players to put whatever item they want in all 3 slots and
#dispenser shops aren't protected from redstone... Etc.
shop-blocks:
    - CHEST
    - TRAPPED_CHEST

shop:
    #Cost to make a stall
    cost: 10
    #Should we refund when their shops are deleted/removed/broken?
    refund: false

    #Is there a fee for changing prices on a shop (Help deter endless undercutting)
    price-change-requires-fee: true
    #If price changes require a fee, how much is the fee
    fee-for-price-change: 50

    #Should we try and lock their shops from other players, so people can't steal from them?
    lock: true
    #Should we require players be sneaking to create and use shops?
    sneak-only: false
    #Should we automatically create the sign for the chest?
    auto-sign: true
    #If a player owns an unlimited shop, should they receive the cash from it or not?
    #If you buy from YOUR unlimited shop, you will NEVER be charged $$, regardless of this setting
    pay-unlimited-shop-owners: false
    #Should we place display items on the chests?
    display-items: true
    #Should we place item frames on chests?
    frame-items: true
    #When someone uses /qs find <item>, how far should we search in blocks?
    #This command lets users shop quickly without wasting time searching
    #Settings > 100 WILL cause lag. Don't do it, or don't cry when your server lags.
    find-distance: 45

#List of items to disallow selling of.  Anyone with quickshop.bypass.<itemID> can bypass it
blacklist:
    - 7 #Bedrock

Copy paste your error log, if any:
N/A

What did you do to cause this issue?  Can you repeat it? (If you can't repeat it, neither can I, don't bother posting a ticket about it)
Just have the server running. Occurs every time.
I thought initially that it was probably "ClearLagg" plugin, so I removed it.
However the icons still vanish - is there an automatic process built into MC/Bukkit which periodically removes ground items? Perhaps this is causingthe icons to disappear...?
The QuickShops continue to work, they just don't look as good....   :-(

If any relevant:
* What version of Vault are you running? v1.2.25-b320
* What economy and economy version are you running (E.g. BOSE or iConomy 6)   Fe v0.6

This h been reported, but i have no idea why its being caused. Reloading Quickshop fixes this