[WICKET-5999] AjaxFormValidatingBehavior not updates initially hidden feedback component

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 6.20.0, 7.0.0
• Fix Version/s: 7.1.0, 8.0.0-M1
• Component/s: wicket
• Environment: Ubuntu x64, Oracle JDK 8u60
• Assignee: Sven Meier
• Reporter: Alexander Morozov
• Created: 14/Oct/15 09:09
• Updated: 18/Oct/15 08:28
• Resolved: 15/Oct/15 12:39

Description

I've found that AjaxFormValidatingBehavior not updates any feedback component that was initially hidden (setOutputMarkupPlaceholderTag is set to true).

I have added unit test and changed behavior of AjaxFormValidatingBehavior. Please, review and apply my PR.