[MC-13239] Shift clicking and item clicking in general

I cannot click or shift click an item in my inventory without it either duplicating or temporarily freezing my screen. Please help.

Linked issues

Tails 2013-04-05T17:51:51Z

Please force a crash by pressing F3 + C for 10 seconds while ingame and attach the crash report here.

Noah Wich 2013-04-05T18:02:23Z

I have attached my crash report.

Tails 2013-04-05T18:02:53Z

Do you have Touchscreen Mode enabled?

Noah Wich 2013-04-05T18:05:06Z

No. I was on a normally generated survival world

Noah Wich 2013-04-05T18:08:58Z

Sorry, I just checked, and I had accidentally activated touchscreen mode, sorry for wasting your time. 😞

Anon Ymus 2013-04-05T18:11:03Z

Duplicate of MC-5130.