Some functions of {attachment} macro does not work when the page is included in another page using {include} macro

Steps to reproduce

1. Create pageA and attach some files
   • Insert {attachments} macro
     
2. Create pageB
   • Insert {include:pageA}
     
3. View pageB
   • Clicking on Properties will result System Error page with the following stack trace:

     java.lang.NullPointerException
         at com.atlassian.confluence.pages.actions.MoveAttachmentAction.bootstrap(MoveAttachmentAction.java:115)
     
     Stack Trace:[hide]
     
     java.lang.NullPointerException
     	at com.atlassian.confluence.pages.actions.MoveAttachmentAction.bootstrap(MoveAttachmentAction.java:115)
     	at com.atlassian.confluence.setup.webwork.BootstrapAwareInterceptor.intercept(BootstrapAwareInterceptor.java:18)
     	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
     	at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
     	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
     	at com.atlassian.confluence.user.actions.UserAwareInterceptor.intercept(UserAwareInterceptor.java:58)
     

   • Clicking on Remove does not take effect
   • Clicking on View (for Office files) will result Page Not Found
     

Findings

Possible cause: the link of attachments in pageB is referring to pageid of pageB instead of its source pageid (pageA)

Functions	Link in pageA	Link in pageB	Remarks
File link	http://localhost/download/attachments/7602191/Document1.doc	http://localhost/download/attachments/7602191/Document1.doc
Properties	http://localhost/pages/editattachment.action?pageId=7602191&fileName=Document1.doc	http://localhost/pages/editattachment.action?pageId=7602193&fileName=Document1.doc	- System Error page with NPE
Remove	http://localhost/pages/removeattachment.action?pageId=7602191&fileName=Document1.doc&version=1	http://localhost/pages/removeattachment.action?pageId=7602193&fileName=Document1.doc&version=1
Edit in Office	http://localhost/plugins/servlet/confluence/default/Global/ds/pageA/Document1.doc	http://localhost/plugins/servlet/confluence/default/Global/ds/pageA/Document1.doc
View	http://localhost/pages/worddav/preview.action?fileName=Document1.doc&pageId=7602191	http://localhost/pages/worddav/preview.action?fileName=Document1.doc&pageId=7602193	- Page Not Found

Workaround

Just found out that if you click on Remove once in pageB, all functions of attachments macro will work fine as the pageid is now referring to the correct source (pageA).
However, be careful in clicking on Remove link twice as it will remove the attachment