Bug with revert and grid : the element goes back to a bad position

[yotsumi]

I have find a bug on the ui.draggable component which appears when i use the options grid and revert.

When you move the draggable element, the first time it goes back to its initial position, but after, he goes back to a bad position ( a little gap ).

I see it on Firefox 3.5, Firefox 3.1, IE8, IE7 ...

See the example below

[yotsumi]

I think that this error can be resolved by making the following modification, but don't ask me how's that work!

In ui.draggable

_mouseStart: function(event) {

Before : this.originalPosition = this._generatePosition(event); [line 99]
Add :

this.originalPageX = event.pageX; this.originalPageY = event.pageY;

[yotsumi]

Bug html file

[wojtek.szkutnik]

I confirm:

adding

this.originalPageX=a.pageX;this.originalPageY=a.pageY;

before or after

this.originalPosition=this.position=this._generatePosition(a);

in JQuery UI Draggable fixes the problem. This exact code is present in JQuery UI Sortable but seems to be missing in Draggable.

[Scott González]

These options won't exist in the rewrite.

[Scott González]

#9702 is a duplicate of this ticket.