[IE] Inline widget dnd throws an exception

[Marek Lewandowski]

checked at major

I've reproduced issue on IE8 and IE10.
IE9 and IE11 are not affected by this bug though.

1. open placeholder plugin sample (/plugins/placeholder/samples/placeholder.html)
2. drag placeholder to other place using handler in top left corner

Expected result:
Placeholder should be moved

Current result:
Following exception is thrown:

SCRIPT16389: Unspecified error. 
plugin.js, line 1635 character 4

[Piotrek Koszuliński]

Definitely critical. AFAIK it was working, so first we need to check what git bisect will say.

[Piotrek Koszuliński]

I was wrong - it never worked in IE8. It's because of extremely buggy IE's moveToPoint method. I'm afraid that we won't find a solution for that.

[Piotr Jasiun]

Works for me on IE10.

[Piotrek Koszuliński]

And works for me too on IE10.

[Piotrek Koszuliński]

I pushed a trivial fix to ​t/11074 - drag handler will be hidden for inline widgets on IE8. We have to wait for #10887 and #10933 to be able to fully manually test it and align automated tests.

[Piotrek Koszuliński]

I reported #11086 as a follow up of this ticket.

[Piotrek Koszuliński]

Fixed on major with ​git:7642fa2 on dev and 9d1c2c1 on tests.