[buddypress-trac] [BuddyPress Trac] #6485: new_blog_comment dropdown filter, the just-me scope and heartbeat activities when comment sync is on

[buddypress-trac]

#6485: new_blog_comment dropdown filter, the just-me scope and heartbeat
activities when comment sync is on
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 Reporter:  imath              |      Owner:
     Type:  defect (bug)       |     Status:  new
 Priority:  normal             |  Milestone:  2.4
Component:  Component - Blogs  |    Version:  2.1
 Severity:  normal             |   Keywords:  has-patch
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 While working on #6482, i've also notice that when comment sync is on:
 - the `bp_blogs_new_blog_comment_query_backpat()` fails to get
 activity_comments that are generated when a post is commented when on the
 just-me scope.
 - when on the activity directory, there is some duplicate content, and
 more annoying the heartbeat feature is displaying the load newest link
 each 30s although there's no new_blog_comment activity. The reason of the
 hertabeat trouble is that the filter
 `_bp_blogs_new_blog_comment_query_backpat_filter` is building a query that
 doesn't order the activities in the right order.

 I suggest to use `BP_Activity_Query` instead of the filter to solve the
 issue.

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Ticket URL: <https://buddypress.trac.wordpress.org/ticket/6485>
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