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https://jira.jboss.org/browse/RF-7010?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12534937#action_12534937
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Sven Rieckhoff commented on RF-7010:
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I also came along this error (lost of drag state) and think i can narrow down
the symptom a bit:
When dragging over a drop zone the dragIndicator is jerking (low performance on
drag validation?). This allows the cursor to hovering the dragIndicator when
dragging to the right or across down to the right. In this moment the drag
aborts and dragIndicator disappears. In some cases instead drag abort (a) the
drop will be executed or (b) the dragIndicator freezes for some seconds and
then drag aborts.
If the cursor does not hover dragIndicator everything works fine. As this
problem only exists in IE8 a (tested) workaround is to enable compatibility
mode (see http://community.jboss.org/wiki/IE8CompatibilityModewithRichfaces)
I think this is a major problem (or at least with normal priority) cause DnD is
not usuable in IE8 (without enabled compatibility mode).
> dragIndicator: low performance and drag state lost after overing the drop
> zone under IE8.
> -----------------------------------------------------------------------------------------
>
> Key: RF-7010
> URL: https://jira.jboss.org/browse/RF-7010
> Project: RichFaces
> Issue Type: Bug
> Security Level: Public(Everyone can see)
> Components: browser compatibility
> Affects Versions: 3.3.1
> Reporter: Ilya Shaikovsky
> Assignee: Nick Belaevski
> Priority: Minor
> Fix For: Future_3.X
>
>
> Visit RF demo dnd sample page.
> drag any item and move it over drop zones without drop.
> I'm able to see very low performance(in difference with FF3 and worse than in
> IE7) and in some moment(vertical cursor movement over drop zone) item gets
> dropped without mouse button releasing.
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