[wp-trac] [WordPress Trac] #29856: Setting default quality doesn't always work

[WordPress Trac]

#29856: Setting default quality doesn't always work
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 Reporter:  markoheijnen                         |       Owner:
     Type:  defect (bug)                         |  SergeyBiryukov
 Priority:  normal                               |      Status:  reopened
Component:  Media                                |   Milestone:  4.0.1
 Severity:  normal                               |     Version:  4.0
 Keywords:  fixed-major needs-patch reporter-    |  Resolution:
  feedback                                       |     Focuses:
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Changes (by tomauger):

 * keywords:  has-patch fixed-major => fixed-major needs-patch reporter-
     feedback


Comment:

 This patch broke image multiresizing on a live multisite (that was
 accidentally using Trunk rather than stable ooops).

 Essentially, using WP_Image_Editor_GD, setting quality on load() set the
 quality of all image sizes to 1.

 It should also be noted that the direct call to set_quality() bypasses all
 the quality filters. I'm not sure whether this is an issue, but it threw
 me for a loop as I was trying to log the quality setting and the filters
 were just not being called at all.

 Interestingly, I am not seeing the issue on a Vanilla install with
 Twentythirteen and no plugins. However, I did disable all plugins and used
 Twentyten on the multisite and the issue occurred consistently. A mirror
 dev site using the same database and configuration, but the stable 4.0
 instead of trunk was not experiencing the issue.

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Ticket URL: <https://core.trac.wordpress.org/ticket/29856#comment:7>
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