Shift-clicking does not work under remapped controls.

Can confirm in 1.7.4/5 and 14w08a, maybe intended?

I hope it's not intended.

When I understood your report correct, it is fixed in 14w21b 😉

Nope, still not fixed in 14w21b. If you change the sneak key (I tried both 'z' and 'left control'), the shift key is still used for inventory shortcuts such as moving items between the inventory and the hotbar.

Is this still a concern in the current Minecraft version 1.8.1 Prerelease 3 / Launcher version 1.5.3 or later? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.

Still very much confirmed for 1.8.3

Still in 16w05a

This is still an "issue" in 19w06a.

However, I think a better way of communicating this issue is that the Shift key has multiple functions, with only a single function listed in Options -> Controls.

The Shift key:

1. By default is mapped to "Sneak"

2. Quick-moves an item (i.e. from inventory to hotbar, inventory to tool, tool output to inventory, etc)

Since both of those functions are performed by the same key, the assumption is that if one re-maps "Sneak" to another key, all of the functions that this key performs will carry over to the new key binding.

When in reality, when Shift is pressed during player gameplay it is interpreted as a keypress event but when it is pressed within crafting menus and inventory it's interpreted as a click modifier (SHIFT+Click performs the "Quick Move" function, similar to how CTRL+Click performs the "Split Block" function).

I believe the underlying request here is to expose these click modifiers as re-mappable options in the Controls, perhaps in their own group. If this were implemented it would require the same key to be able to be used for "Sneak" (or any other function) as well as "Quick Move" (i.e. key mapping conflicts should only arise within groups).