Inventory Item Handling is Bugged

[lowercasebtw]

General Information

none

Bug Description

Clicking to grab or place items in a gui/inventory is very glitched, it sometimes won't grab the item and ill have to click a few times before it grabs/places it

Steps to Reproduce

Join a 1.4.7 server (haven't tested above, but have noticed this issue in versions below too)
Grab some items
Craft some stuff or click items around in inventory

Expected Behavior

It works fine and items are grabbed/placed on click

[lowercasebtw]

I haven't tested 1.5-1.7 but noticed it happens in versions below too.

Doesn't happen in 1.7.10+ from personal experience

[lowercasebtw]

Just created a ghost item cause of this bug. I had closed my inventory with it still in my cursor and it dropped but didn't show visually and I picked it up and opened my inventory and it was still where i placed it originally but now in my hotbar too.