[IE10@Win8] Dnd of inline widgets throw an exception in Win8

[Marek Lewandowski]

since: 4.3 until major

Dnd

1. open sample with placeholder plugin (​/plugins/placeholder/samples/placeholder.html)
2. drag placeholder using handler anywhere

Expected result:
Placeholder should be moved to new position.

Current result:
Exceptions is being thrown:

SCRIPT16389: Unspecified error. 
plugin.js, line 1692 character 4

and widget is not moved

additional info:

1. It occurs only in Windows 8 environment
2. we've confirmed it in 2 ie10 versions: 10.0.9200.16721 and 10.0.9200.16660

[Piotrek Koszuliński]

Guess what... #11074 again.

1692: 			$range.moveToPoint( $evt.clientX, $evt.clientY );

Related ticket: #11086.

[Piotr Jasiun]

I created draft of the solution in ​t/11158 but it is still unstable in some cases. Because now this error occurs only on IE10 & Windows 8 what is quite unusual combination I think that we can leave it and fix in the future.

[Piotrek Koszuliński]

It will require a lot of work to fix this and IE10@Win8 is not a popular combination, because it's automatically upgraded to IE11. Pretty soon there should be nearly no IE10. In this case it makes no sense to spend more time on this issue. Especially that no one else has reported it except us.