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https://issues.apache.org/jira/browse/WICKET-4893?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13582069#comment-13582069
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Benjamin Steinert commented on WICKET-4893:
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The reason is the following if clause inside hideShowCovered():
if (popupVisible === 0 || (leftX>acRightX) || (rightX<acLeftX) ||
(topY>acBottomY) || (bottomY<acTopY))
The method argument popupVisible is a boolean actually (lines 424 and 452), but
the comarison does not do a type conversion (=== 0 is always false).
To fix this, just change that clause to (=== false).
But complete removal is also fine ;) +1
> AutoCompleteTextField removes DropDownChoice from Page
> ------------------------------------------------------
>
> Key: WICKET-4893
> URL: https://issues.apache.org/jira/browse/WICKET-4893
> Project: Wicket
> Issue Type: Bug
> Components: wicket-extensions
> Affects Versions: 6.3.0
> Environment: Internet Explorer 8
> Reporter: Martin Wischnewski
> Priority: Minor
> Fix For: 7.0
>
> Attachments: AutoComplete.zip
>
>
> Following Situation with Internet Explorer 8:
> I add two Components on a Page.
> A AutoCompleteTextField and beneath a DropDownChoice
> If i type something into the AutoCompleteTextField, a suggestionlist appears
> and hides the DropDownChoice.
> The DropDownChoice disappears from the Page and is not visible anymore.
> Note: In Firefox and Chrome the DropDownChoice doesn't disappear from the
> page.
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