IE10/11: User is able to remove elements from the page after highlighting and dragging

[hnguyen08]

In IE 10/11 only (tested IE10 and IE11, not occurring in Chrome or Firefox or IE9 surprisingly):

1. Visit the demo page
2. Scroll down to the section with the handles under "Connected Lists"
3. Highlight a few elements of the list. In the picture below, I highlighted the subitems of Item 2 through Item 5
4. Use the handle to drag one of the highlighted elements to another part of the list. In the picture below, I dragged Item 5 to above Item 2
5. See that the elements have disappeared

Step 3:

Step 4:

[ncareau]

Confirmed on IE11 11.63.10586.0

Any quick fix on this issue ?

[iArnoldo]

Anything new to this issue?

[lukasoppermann]

Hey, I do not have any IE10/11 available for testing.

Are there any errors in the console? @iArnoldo ?

Can anybody pin-point the bug and send a PR to fix it?

[jneb]

Probably the same bug as #424