There were numerous reports of the bug on the Google Issue Tracker and the company seems to have finally tackled it. A proof of the upcoming fix is found in the Android Open Source Project, where there's a page named "Fix resampling for multiple pointers".
The multi-touch issue apparently came from a resampling issue. Resampling is essentially the process of converting the touches on a screen into commands. When two presses of the screen occurred at the same time, Android would go nuts and send different "coordinates" for those touches, resulting in non-existing actions.
However, users might have to endure the bug a bit more, as Google will not release its fix before June, due to the company's policy regarding security updates and bug fixes, where changes need to be made at least a month prior to the release of a patch. Hey, at least they are fixing it.