Issue explanation

When attempting to control the inventories whilst Drop selected items is bound to any mouse button which includes Attack/Destroy being bound to any unused key, All inventory controls that are not defaulted will become blocked by the mouse buttons as result.

Mojira issue link

https://bugs.mojang.com/browse/MC-577

Other

Because of MC-91315 - This bug reproduction is slightly more difficult in order to happen but it is there.